Influence of balanced nutrition on productivity, economics and nutrient uptake of hybrid maize (Zea mays)chickpea (Cicer arietinum) cropping sequence under irrigated ecosystem

S.M. HIREMATH; R. MOHAN KUMAR; ASHOK KUMAR GADDI

doi:10.59797/ija.v61i3.4388

Authors

S.M. HIREMATH
R. MOHAN KUMAR
ASHOK KUMAR GADDI

DOI:

https://doi.org/10.59797/ija.v61i3.4388

Keywords:

Balanced nutrition, Economics, Maizechickpea cropping system, Nutrient uptake, Produc- tivity

Abstract

A field experiment was conducted during the rainy (kharif) and winter (rabi) seasons of 201213, 201314 and 201415 at farmers fields of Nargund taluk of Gadag district, Karnataka, to study the response of maize (Zea mays L.)chickpea (Cicer arietinum L.) cropping sequence to balanced nutrition. The experiment, consisting of 7 treatments, viz. absolute control, recommended N alone, recommended N and P, recommended N and K, recom- mended NPK, recommended NPK with ZnSO and farmers practice, was replicated in 12 farmers field in random- 4 ized complete-block design. Application of 150 kg/ha N, 75 kg/ha P and 37.5 kg/ha K along with 25 kg/ha ZnSO 4 to maize recorded significantly higher grain (5.42 t/ha) and stover (7.61 t/ha) yields, gross returns (63.86 103 / ha), net returns (36.50 103 /ha) and benefit: cost ratio (2.33). Similarly, significantly higher NPK uptake was with this treatment combination. In the succeeding chickpea, application of 25 kg/ha N, 50 kg/ha P and 15 kg/ha ZnSO 4 resulted in significantly higher seed (1.38 t/ha) and haulm (1.93 t/ha) yields. This treatment also recorded signifi- cantly higher gross returns (47.16 103 /ha), net returns (31.49 103 /ha) and benefit: cost ratio (3.40). System productivity of the cropping sequence indicated that significantly higher maize-equivalent yield (9.22 t/ha), system production efficiency (41.92 kg/ha/day) and system net returns (67.99 103 /ha) were observed with the applica- tion of 150 kg/ha N, 75 kg/ha P and 37.5 kg/ha K along with 25 kg/ha ZnSO to maize and 25 kg/ha N, 50 kg/ha P 4 and 15 kg/ha ZnSO to succeeding chickpea. 4

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Table 4. Economics of maize and chickpea as influenced by nutrients combinations in maize-chickpea cropping sequence (pooled data of 3 years)

Treatment Maize Chickpea System economics System

Gross Net Benefit: Gross Net Benefit: Gross Net Benefit: production

returns returns cost returns returns cost returns returns cost efficiency

( 103 ( 103 ratio ( 103 ( 103 ratio ( 103 ( 103 ratio (kg/ha/day)

/ha) /ha) /ha) /ha) /ha) /ha)

Control 18.04 -2.32 0.88 20.66 10.98 2.17 38.70 8.65 1.28 14.66

N 35.00 12.31 1.54 27.26 15.31 2.26 62.27 27.62 1.80 23.52

NP 45.38 19.80 1.78 33.86 19.57 2.24 79.24 39.37 1.98 30.26

NK 41.99 18.87 1.82 31.41 19.65 2.66 73.40 38.52 2.10 27.72

NPK 55.99 31.21 2.34 41.21 25.89 2.69 97.20 57.10 2.42 37.33

NPK+ZnSO4 63.86 36.50 2.33 47.16 31.49 3.4 111.02 67.99 2.58 41.92

Farmers practice 32.82 14.91 1.65 28.97 16.08 2.22 95.13 30.99 1.48 25.48

SEm 0.62 0.38 0.05 0.31 0.27 0.1 0.93 0.65 0.07 0.31

CD (P=0.05) 1.86 1.15 0.13 0.92 0.81 0.29 2.78 1.96 0.22 0.94

Table 5. Post-harvest soil-nutrient status as influenced by nutrients combinations in maizechickpea cropping sequence

Treatment Residual nitrogen (kg/ha) Residual phosphorus (kg/ha) Residual potassium (kg/ha)

201314 201415 201213 201314 201415 201213 201314 201415

Control 75 117 86 18 19 10 381 613 557

N 90 124 81 19 18 14 393 553 550

NP 92 128 83 21 19 16 399 593 608

NK 99 129 91 21 18 10 408 581 608

NPK 114 130 81 22 19 16 421 602 608

NPK+ZnSO4 125 136 91 24 20 17 427 597 608

Farmers practice 87 125 83 19 19 15 381 592 730

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