• BRINJAL IN PRECISION FARMING EARNED Rs.5.16 LAC FROM AN ACRE IN A YEAR 1 1
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Offline Satish1183

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Thank You For your reply.

Your reply reflects your study and expertise in Agriculture. I am from Maharashtra. To tell you truth I am an engineer with Zero knowledge and experience in Agriculture. But still strong will to do something new led me to enter into farming.

Today without any experienc i am setting up a polyhouse in area 2700 Sq Mtr. and along i am searching and studying new trends in agriculture techniques.. i read lot about ZBNF so was keen to know about its results on cash crops like vegetables. Its effect on quality,yield ..

Since you posted about Precision Farming technique so i thought you might have idea about ZBNF so wanted to know your opinion.
        As an expriment i m doing terrace garden. i have just planted chilly,tomato,brinjal,capsicum plants each 5 to 8 in plastic bag. I prepared JIVAMRUT  by mixing Desi Cow Dung,Urine,Jaggery,Soil and besan. i will see effect of giving this natural input to the plants..but i will surely do some expriments in farmland by adopting ZBNF..Though i dnt own farm ,i have taken farm on lease for setting up Polyhouse.Similar way i will take farm on rent and will go for farming..

Hello Ashish,

Kindly share your ZBNF experience. I am really fascinated by the ZBNF techniques invented by Shri. Subhash Palekar.
I am engineer working in Mumbai and fed with fast paced life here. I am very keen to get into farming.

REGARDS,
Satish Sonavane.





Offline rakesht6

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Hello Ramu Sir,

Need your help on fertigation schedule.
I'm Planting Tomato, Brinjal and Chillies in acre land
Can you please provide the fertigation schedule for these crops.

Thanks,
Rakesh


Offline RAMU

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Hello Ramu Sir,

Need your help on fertigation schedule.
I'm Planting Tomato, Brinjal and Chillies in acre land
Can you please provide the fertigation schedule for these crops.

Thanks,
Rakesh

Dear friend ..sure I will post you the fertigation schedule for all these crops ..But before that please inform what was applied in basal soil application with items of the fertilizers and manure  and its exact quantity .It will enable me to work out the need of the crops from fertigation ..

I will post on Monday since I am on urgent outside work for next two days


Offline rakesht6

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Ramu Sir,

The land is about 0.75acre. I gave 40 kgs neem cake, 50 kgs SSP, 6 tns FYM in last plough.

I'm planning tomato, chilli, brinjal in 0.25 acre each.

Thanks,
Rakesh.


Offline RAMU

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Ramu Sir,

The land is about 0.75acre. I gave 40 kgs neem cake, 50 kgs SSP, 6 tns FYM in last plough.

I'm planning tomato, chilli, brinjal in 0.25 acre each.

Thanks,
Rakesh.

TOMATO HYBRID
Fertilizers recommendation
80:100:100 kgs of nitrogen,phosphorus, potash
fertilizers choice - urea,single super phosphate, water soluble fertilizers like19:19:19 ,12:61:0 and 13:0:45
Area of tomato planned for cultivation =0.25 Ac
so the quantity of above fertilizers ..
0.25* 80 kgs of N = 20 kgs
0.25 * of 100 kgs P= 25 kgs
0.25 * 100 kgs of K= 25 kgs
Basal dose of single super phosphate applied = 50 kgs
Nutrient percentage of P in super phosphate is 16 %
so 50 kgs of super phosphate contains - 50 * 0.16 = 8.0 kgs of phosphate nutrients
So balance phsporus to be applied = 25 kgs - 8.0 kgs = 17  kgs
now nutrients required for 0.25 acre of tomato - 20:17 :25 kgs
Percentage of nutrients required at various growth period of tomato
Establishment phase ( from transplanting - next 10 days )
19-19-19 -6.6 kgs
13-0-45 - 2.3 kgs
Urea - 1.0 kgs
FLOWER INITIATION TO FLOWERING STAGE ( 30 DAYS )
12-60-0 - 8.2 kgs
13-0-45 - 22.25 kgs
Urea - 12.8 kgs
FLOWERING TO FRUIT SET ( 30 DAYS )
19-19-19   - 6.6 kgs
13-0-45  - 13.4 kgs
UREA - 10.0 kgs
HARVEST STAGE ( from 75 -80 days onward )
12-61-0  -2.0 Kgs
13-0-45 -11.20 Kgs
UREA  - 5.0 kgs

TOTAL
19-19-19   - 13.2 kgs
12-61-0    -   10.2 kgs
13-0-45    -   49.15 kgs
UREA        -  28.8 kgs
Total Nitrogen supplied -23.28
19-19-19 = 13.2 kgs *19% N=2.508 kgs
12-61-0 = 10.2 kgs * 12% N= 1.224 kgs
13-0-45 = 49.15 kgs * 13.0%N = 6.300 kgs
Urea = 28.8 kgs * 46% N = 13.248 kgs
Total phosporus supplied  (8.73 kgs + 8 kgs as basal application ) = 16.73 kgs
19-19-19 - 13.2 kg *19% P = 2.508 kgs
12-61-0  - 10.2 kgs *61% = 6.222 kgs
13-0-45 - 49.15 kgs * 0% P =0.000 kgs
Total Potassium supplied = 24.625
19-19-19- - 13.2 kgs *19* K = 2.508 kgs
12-61-0 -10.2 kgs * 0.0% K = 0.000 kgs
13-0-45 - 49.15 kgs *45% K = 22.118 kgs

Total Nutrients required Vs supplied
20:25:25 kgs NPK recommended
23.28   :   16.73  :   24.625 kgs NPK
Shortage of 8.17 kgs of phosphorus in term of supper phosphate 52 kgs ( 51.687 ) needs to be applied in soil as basal dose ..If you could not apply this superphosphate for various reason , Please you spray 12-61-0 as foliar application @ 10 grams in 1 lit water  for about 3 times at 15, 30 and 40 th days after transplanting
How ever the super phosphate needs to be soil applied before planting .Soil application only will have real effect than foliar application in Tomato ..
The Water soluble fertilizers should be prepared into stock solution in the ratio of 1:5 ..I kg water soluble fertilizers : 5 liter water ..
If you apply 3 kgs of water soluble fertilizers you need to mix it in 15 lit water that makes your stock solution
This stock solution can be mixed in another 100 lit water for drip application either through ventury or Fertilizer tank . The fertigation should run atleast for 30-40 minutees to ensure uniform application for all the plants in the field..
One more advise
The conventional synthetic fertilizers's solubility and its availability is around 19-25 % only .It means if you apply 100 kgs of 20-20-0 complex fertilizers ,it has nutrients percentage of 20 kg nitrogen and 20 kg phosphorus ..But the available nutrients out of this 20 kgs nitrogen ,only 5 kgs are available to the plant
Likewise the watersoluble fertilizers's availability is estaimated to be around 50-60% only in the soil environment.
If you apply 10 kgs of 19-19-19 ,it has only 1.9 kgs of Nitogen, phosphorus and potash each .Out of this 1.9 kgs 1.14 kgs of nutrients are available to the plant .
Where as fertilizers recommendation as 200-250-250 NPK per hactare is just a blank recommendation for estimated yield of tomato say 40 MT ..
So this concept does not fit everywhere and you need to judge actual nutrients requirement based on your soil condition , prevailing weather climate,special cultural practices like plastic mulch or organic mulching used ,  irrigation type , kind of tomato cultivated ( determinate or indeterminate , variety or hybrid or high yielding hybrid ) etc ..
Ok Mr.Rakesh ..this is a model I have given for your tomato, for other crops like chilli or something , you can follow this method how to work out the quantity of nutrients for every crop
Good luck ....



Offline rakesht6

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Ramu Sir,

Thank you very much. I've laid mulching sheet yesterday and holes are done. planning for transplantation on Wednesday.
Water resource is pretty good here. Also the land is black loamy soil. so water retention rate is good.
Will definitely follow the steps you mentioned for fertilizer dosage for brinjal and chilli too.
By the way I'm going US440 Hybrid for tomato.

Thanks,
Rakesh.

Offline RAMU

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Ramu Sir,

Thank you very much. I've laid mulching sheet yesterday and holes are done. planning for transplantation on Wednesday.
Water resource is pretty good here. Also the land is black loamy soil. so water retention rate is good.
Will definitely follow the steps you mentioned for fertilizer dosage for brinjal and chilli too.
By the way I'm going US440 Hybrid for tomato.

Thanks,
Rakesh.

Great ..Black soil is really fertile soil when properly managed ,,wish you good luck ..

Offline rakesht6

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Hello Ramu Sir,

I'm using a venturi in my drip and i'm irrigating once a week. Can i supply the fertilizers in a split dose of week and apply.
Also, since we are having rains, every few days, wanted to know if i can apply fertilizers through drip with same weekly schedule. I mean use drip until fertilizers are supplied and later stop it. Since rain water is enough for the plants for irrigation. Please advise.

Thanks,
Rakesh

Offline RAMU

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Hello Ramu Sir,

I'm using a venturi in my drip and i'm irrigating once a week. Can i supply the fertilizers in a split dose of week and apply.
Also, since we are having rains, every few days, wanted to know if i can apply fertilizers through drip with same weekly schedule. I mean use drip until fertilizers are supplied and later stop it. Since rain water is enough for the plants for irrigation. Please advise.

Thanks,
Rakesh

Dear Mr.Rakesh

Ventury is easy and convenient to operate . You said your soil is black loam that retain excess water when the irrigation water is added to rain water that will invite fungal and bacterial disease like root rot and bacterial wilt disease ...so you can not run drip irrigation now ..However based on soil moisture status , you can run the drip system for giving fertigation in short time say 30 minutes instead of 1 hour duration .

During rain the tomato needs little more nitrogen that can be given in excess of recommended dose .

The black soil area needs bed height of atleast 30 cms that will best drain the excess water in case of unusual rain .so pleae also check your beds with wooden pole

Just press a wooden dagger to about 20 cms deep inside the soil layer and pull out and see if the soil is sticking in clumps around the dagger .If heavy clumps are noticed you stop irrigation and schedule it sometime later .If the dagger is clear of heavy soil clumps ,you can give fertigation

Instad of fertigation , you can even give foliar spray with 19-19-19+Mn @ 5 grams in one lit water

Regards

Offline rakesht6

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Ramu Sir,

this may sound stupid, but please correct if i'm wrong. For fertigation, we are giving kgs of fertilizers, whereas when we're using foliar spray the dosage is quite less comparatively. Correct me if i'm missing something.

And also do i need to spray this after 10 days after transplantation. As per the fertigation schedule, the first dose is between 7-10 days of transplantation.

And also, just to let you know, i transplanted tomatoes yesterday.it drizzled yesterday and it rained today. So i guess fertigation is out of the equation for now. because we had a good rain, and i don't think we need to irrigate for another 10 days.

Pardon me for asking too many questions, its just that i'm trying vegetables first time.

Offline RAMU

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Ramu Sir,

this may sound stupid, but please correct if i'm wrong. For fertigation, we are giving kgs of fertilizers, whereas when we're using foliar spray the dosage is quite less comparatively. Correct me if i'm missing something.

And also do i need to spray this after 10 days after transplantation. As per the fertigation schedule, the first dose is between 7-10 days of transplantation.

And also, just to let you know, i transplanted tomatoes yesterday.it drizzled yesterday and it rained today. So i guess fertigation is out of the equation for now. because we had a good rain, and i don't think we need to irrigate for another 10 days.

Pardon me for asking too many questions, its just that i'm trying vegetables first time.

Dear Mr.Rakesh

It is okay ..No problem in helping people like you .

Seems cyclone is building up in bay of Bengal near by Andhra .

Immediate concern is to protect your tomato that is liable to casualty in excess soil moisture in black soil .

Dissolve 5 kgs of DAP fertilizers and 600 grams of copper oxy chloride in 200 lit water , mix it thoroughly and wait for 1/2 hour and then pour this mixture @ 50 to 75 ml per plant manually .

See that this solution does not touch the leaves .It needs to be poured on the roots only

The Diammonium phosphate is to give ammoniacal nitrogen and phosphorus to the tomato seedlings that eats these two more in the early growth stage and later it needs nitrate form of nitrogen that will be supplemented through water soluble fertilizers like 19-19-19 and 13-0-45 through fertigation.

The copper oxy chloride will prevent bacterial rot and root rot in early stage of tomato growth ...

Regarding foliar spray 0.05 % dose is equal to 5 kgs of soil application.

For example , for 25 cents of tomato you may need 2 tanks of spray 10 lit each .For 20 lit water @ 0.05% you need 100 grams of 19-19-19 water soluble fertilizers ..where as in soil application you may need 1 kgs of 19-19-19 WSF.. foliar spray is entirely used by the plants .Where as soil application needs 1 kg 19-19-19 WSF, out of which only 40 -50 % will be available to the plant. But the nutrient use efficiency is better in foliar spray..

You can start your fertigation schedule after rain is over .But see that you need to give extra nitrogen to the tomato after rain .So schedule your fertigation in such a way that you add 10% more nitrogen than recommended dose through urea that is water soluble .

And also keep in mind that tomato needs more nitrogen and phosphorus in early stage of growth .If you observe tomato roots , it is having more root volume with innumerable white feeder roots . All that need more phosphorus and also enough calcium .It is the reason why we recommend more super phosphate as basal application in soil before planting ..

The nutrient requirement will be in the following ratio

Establish stage 0-10 days after planting - 10 % of recommended dose of nutrients

Vegetative phase - 11- 40 days ( more branches and leaves production ) - 40 % of recommended nutrients

Flowering and fruit setting  - 40-70 days - 30 % of recommended dose of nutrients

Harvest - starts from 72 to 80 days - 20 % of the recommended dose of nutrients ..

Depending on the growth and yielding pattern , you can continue the level of nutrients given in the harvest stage ..

Regards

Offline sushil_acharya

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TOMATO HYBRID
Fertilizers recommendation
80:100:100 kgs of nitrogen,phosphorus, potash
fertilizers choice - urea,single super phosphate, water soluble fertilizers like19:19:19 ,12:61:0 and 13:0:45
Area of tomato planned for cultivation =0.25 Ac
so the quantity of above fertilizers ..
0.25* 80 kgs of N = 20 kgs
0.25 * of 100 kgs P= 25 kgs
0.25 * 100 kgs of K= 25 kgs
Basal dose of single super phosphate applied = 50 kgs
Nutrient percentage of P in super phosphate is 16 %
so 50 kgs of super phosphate contains - 50 * 0.16 = 8.0 kgs of phosphate nutrients
So balance phsporus to be applied = 25 kgs - 8.0 kgs = 17  kgs
now nutrients required for 0.25 acre of tomato - 20:17 :25 kgs
Percentage of nutrients required at various growth period of tomato
Establishment phase ( from transplanting - next 10 days )
19-19-19 -6.6 kgs
13-0-45 - 2.3 kgs
Urea - 1.0 kgs
FLOWER INITIATION TO FLOWERING STAGE ( 30 DAYS )
12-60-0 - 8.2 kgs
13-0-45 - 22.25 kgs
Urea - 12.8 kgs
FLOWERING TO FRUIT SET ( 30 DAYS )
19-19-19   - 6.6 kgs
13-0-45  - 13.4 kgs
UREA - 10.0 kgs
HARVEST STAGE ( from 75 -80 days onward )
12-61-0  -2.0 Kgs
13-0-45 -11.20 Kgs
UREA  - 5.0 kgs

TOTAL
19-19-19   - 13.2 kgs
12-61-0    -   10.2 kgs
13-0-45    -   49.15 kgs
UREA        -  28.8 kgs
Total Nitrogen supplied -23.28
19-19-19 = 13.2 kgs *19% N=2.508 kgs
12-61-0 = 10.2 kgs * 12% N= 1.224 kgs
13-0-45 = 49.15 kgs * 13.0%N = 6.300 kgs
Urea = 28.8 kgs * 46% N = 13.248 kgs
Total phosporus supplied  (8.73 kgs + 8 kgs as basal application ) = 16.73 kgs
19-19-19 - 13.2 kg *19% P = 2.508 kgs
12-61-0  - 10.2 kgs *61% = 6.222 kgs
13-0-45 - 49.15 kgs * 0% P =0.000 kgs
Total Potassium supplied = 24.625
19-19-19- - 13.2 kgs *19* K = 2.508 kgs
12-61-0 -10.2 kgs * 0.0% K = 0.000 kgs
13-0-45 - 49.15 kgs *45% K = 22.118 kgs

Total Nutrients required Vs supplied
20:25:25 kgs NPK recommended
23.28   :   16.73  :   24.625 kgs NPK
Shortage of 8.17 kgs of phosphorus in term of supper phosphate 52 kgs ( 51.687 ) needs to be applied in soil as basal dose ..If you could not apply this superphosphate for various reason , Please you spray 12-61-0 as foliar application @ 10 grams in 1 lit water  for about 3 times at 15, 30 and 40 th days after transplanting
How ever the super phosphate needs to be soil applied before planting .Soil application only will have real effect than foliar application in Tomato ..
The Water soluble fertilizers should be prepared into stock solution in the ratio of 1:5 ..I kg water soluble fertilizers : 5 liter water ..
If you apply 3 kgs of water soluble fertilizers you need to mix it in 15 lit water that makes your stock solution
This stock solution can be mixed in another 100 lit water for drip application either through ventury or Fertilizer tank . The fertigation should run atleast for 30-40 minutees to ensure uniform application for all the plants in the field..
One more advise
The conventional synthetic fertilizers's solubility and its availability is around 19-25 % only .It means if you apply 100 kgs of 20-20-0 complex fertilizers ,it has nutrients percentage of 20 kg nitrogen and 20 kg phosphorus ..But the available nutrients out of this 20 kgs nitrogen ,only 5 kgs are available to the plant
Likewise the watersoluble fertilizers's availability is estaimated to be around 50-60% only in the soil environment.
If you apply 10 kgs of 19-19-19 ,it has only 1.9 kgs of Nitogen, phosphorus and potash each .Out of this 1.9 kgs 1.14 kgs of nutrients are available to the plant .
Where as fertilizers recommendation as 200-250-250 NPK per hactare is just a blank recommendation for estimated yield of tomato say 40 MT ..
So this concept does not fit everywhere and you need to judge actual nutrients requirement based on your soil condition , prevailing weather climate,special cultural practices like plastic mulch or organic mulching used ,  irrigation type , kind of tomato cultivated ( determinate or indeterminate , variety or hybrid or high yielding hybrid ) etc ..
Ok Mr.Rakesh ..this is a model I have given for your tomato, for other crops like chilli or something , you can follow this method how to work out the quantity of nutrients for every crop
Good luck ....

Dear Ramu Sir and other members of this forum and this discussion topic,
I have been following this form and mostly all posts by Ramu sir, I would like thanks Ramu sir’s effort and the interest to convey his knowledge to all forum members to educate them on different topics. The way Ramu Sir describes every thing is really good. We ppl understands things if its derived by numbers and formulas. And Ramu sirs all post is related to that only.
Coming to the topic, I have gone through the “fertilizer recommendations “ posted by Ramu sir. I very clearly could get how science and mathematical calculation can be used in agriculture. After going through this post I have spent some time to prepare a excel sheet with different calculations which I could understand from Ramu Sir’s post (I could be wrong somewhere in my sheet). I am attaching the same sheet in my post.
In this sheet the any one can just enter the field area which they want to cultivate, rest every thig will be calculated automatically.
I have one doubt which Ramu sir can clarify or he can change that number in the sheet if required, i.e.
“Fertilizers required at different stages” where he has mentioned required quantity of 19-19-19, 13-0-45, 12-61-0, Urea for each stage, here my question is,
1.   How he has arrived to that number of quantity
2.   IS there any base value of quantity which can be used for calculation
3.    Any thing else you want to be considered in this sheet

Ramu sir has mentioned the quantity for .25 acers, I have calculated the same by multiplying by 4 to get the quantity for 1 Acer and I have used that as a base number for calculation. To be very honest I got all the points except this section, since I couldn’t get the logic of this required quantity of N-P-K at different stages. I hope Ramu sir will definitely throw some light on this.
The attached sheet is just a initial draft version which can be fine tuned more based on other paramaters which are involved in fertigation schedule. Same type of sheet can be used for different crops as well. I think it will become a very good master sheet for all which will help farmers to plan their fertigation activity. Once this master sheet is finalized then we can work on  another sheet which can be used to record fertilizer application data, and based on both master and transaction sheet record real fertigation data and based on that it will show the real status for proper planning.
I request all of you to go through the sheet and let me know your comments. Ramu sir I request your comments and inputs to make this sheet more usefull.
Thanks and regards,
Sushil


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