Nutrional management
Nitrogen is the most important nutrient. Deficiency of nitrogen reduces endogenous auxins and blossom end rot disease increase with increased levels of nitrogen. Phosphorus is essential for rapid root development. Deficiency of phosphorus leads to the development of purple colour on the underside of leaflets. Potassium is involved in the synthesis of proteins and organic acids. Deficiency leads to yellowing at the margins of leaf. A high level of potassium improves the shape of fruit. In general NPK @ 110 kg: 60 kg: 60 kg per ha has been recommended for various tomato varieties. The quantity of Nitrogen to be applied varies greatly depending on the variety as well as soil conditions. Nitrogen is the best applied in the form of Urea. Besides the above inorganic fertilizers combination of well decomposed FYM and groundnut cake is recommended. FYM is to be added @ 20-25 tons per ha at the time of last ploughing and incorporated into soil. Regarding the inorganic chemical fertilizers half N, entire P and K should be applied as basal dose, half N is given in 2 to 3 splits. 30, 45, 60 days after sowing. Micro nutrients like B, Zn also need to be applied and lime is essential under acidic soil.Availability of Boran is considered to be essential fro production of lorge size fruit with high vitamin content and prevent fruit cracking, while Zinc for higher ascorbic acid content and tolerences to diseses.
Given,
N=110kg/ha
P=60kg/ha
K=60kg/ha
FYM=20t/ha
We know that
1 ha=4 bigha
Urea=46%N
SSP=16%P
MOP=60%k
FYM=0.5%N, 0.2%P, 0.5%K
For Tomato Recommended Dose
N=110kg/ha
For 1 bigha = 110/4
=27.5kgN
P=60kg/ha
For 1 bigha=60/4
=15kgP
K=60kg/ha
For 1 bigha=60/4
=15kgK
FYM Requirement for 1 bigha=20/4
= 5 t= 5000kg
100kg FYM________________________0.5kgN
1 kg FYM__________________________0.5/100
5000kg FYM________________________0.5/100*5000
= 25kgN
100kgFYM_____________________________0.2kgP
5000kgFYM_____________________________0.2/100*5000
=10kgP
100kgFYM____________________________0.5kgK
5000kg FYM______________________________0.5/100*5000
=25kgK
N require 27-25= 2kg from urea
UREA,
46kgN_____________________100kgbag
1 kg______________________100/46
2 kgN____________________100/46*2
=4.34kg Urea
P require= 15-10=5kg
SSP,
16 kgP______________100kg
1 kg________________100/16
5 kg___________________100/16*5
= 31.5kg SSP
K____________ NO require
N=110kg/ha
P=60kg/ha
K=60kg/ha
FYM=20t/ha
We know that
1 ha=4 bigha
Urea=46%N
SSP=16%P
MOP=60%k
FYM=0.5%N, 0.2%P, 0.5%K
For Tomato Recommended Dose
N=110kg/ha
For 1 bigha = 110/4
=27.5kgN
P=60kg/ha
For 1 bigha=60/4
=15kgP
K=60kg/ha
For 1 bigha=60/4
=15kgK
FYM Requirement for 1 bigha=20/4
= 5 t= 5000kg
100kg FYM________________________0.5kgN
1 kg FYM__________________________0.5/100
5000kg FYM________________________0.5/100*5000
= 25kgN
100kgFYM_____________________________0.2kgP
5000kgFYM_____________________________0.2/100*5000
=10kgP
100kgFYM____________________________0.5kgK
5000kg FYM______________________________0.5/100*5000
=25kgK
N require 27-25= 2kg from urea
UREA,
46kgN_____________________100kgbag
1 kg______________________100/46
2 kgN____________________100/46*2
=4.34kg Urea
P require= 15-10=5kg
SSP,
16 kgP______________100kg
1 kg________________100/16
5 kg___________________100/16*5
= 31.5kg SSP
K____________ NO require