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The effect of N, P and K fertilizer treatments was observed on poplar plants in nursery. The nutrients applied in combination to poplar had significant effect on height and collar diameter of entire transplants of poplar (ETP'S) produced in nursery. The nutrient treatment N225P150K75 was effective to increase in plant height, collar diameter, average leaf area and biomass of ETP's produced. Among different clones studied clone no. L-47/48 and PL-6 attained maximum height, collar diameter, average leaf area and biomass. The minimum height was recorded in clone PL-1 and Collar diameter in clone PL-2. The average leaf area varied differently in the nine clones studied in the present investigation. The nutrient applied had significant effect on average leaf area of poplar in nursery. The maximum leaf area was recorded with the application of N150 P100 K50. The biomass produced by the poplar clones under the influence of nutrient applied to Poplar clones in nursery had similar response as to average leaf area. The interaction effect (clone×nutrients) shows that each clone has differential response to nutrient applied in different combinations of N, P and K treatment (N0P0K0), (N75P50K25), (N150P100K50) and (N225P150K75) for plant height, collar diameter, average leaf area and biomass growth. This interaction effect is reflection of genetic potential of clones under favourable G×E interaction. [ABSTRACT FROM AUTHOR]

An experiment was conducted at Hill Agricultural Research Station, Khagrachari, Bangladesh during May, 2014 to January, 2015 to study the effects of different fertilizer on the performance of jhum crops. Rice, marpha, maize, sweet gourd, sesame and arhar were used as the jhum test crops. The experiment was laid out in Latin Square Design (LSD). The treatments consisted of four levels of NPK fertilizers i.e. no fertilizer (Control), 40 kg N+25 kg P2O5+30 kg K2O ha-1, 80 kg N+50 kg P2O5+60 kg K2O ha-1 and 120 kg N+75 kg P2O5+90 kg K2O ha-1. The yield parameters and yields of jhum crops were significantly affected by fertilizer. NPK fertilizer plays a significant role on the yield of rice, marpha, maize, sesame, sweet gourd and arhar. The highest yield of rice (3.34 t ha-1), marpha (984.8 kg ha-1), maize (951.3 kg ha-1), sweet gourd (1418.0 kg ha-1), sesame (331.3 kg ha-1) and arhar (349.9 kg ha-1) were found in T4 treatment that received 120 kg N+75 kg P2O5+90 kg K2O ha-1. On the other hand, lowest yield of rice (1.67 t ha-1), marpha (453.8 t ha-1), maize (517.5 t ha-1), sweet gourd (781.3 t ha-1), sesame (107.1 t ha-1) and arhar (103.6 t ha-1) were found in the treatment with no fertilizer. [ABSTRACT FROM AUTHOR]

A field experiment was conducted during 2014-2015 to study the response of French bean (Phaseolus vulgaris) to graded doses of fertilizer and to formulate soil test based fertilizer recommendation for targeted yield of french bean under rice-french bean cropping system in a lateritic soils of Odisha. Detailed morphological and physico-chemical properties of a typifying pedon of the experimental site was conducted. In kharif season, three fertility gradient strips were created (B-I, B-II & B-III) by application of no fertilizer, recommended dose of fertilizer and twice of the recommended dose in rice. Each of these fertility gradient strips were divided into 24 sub-plots where 21 plots were treated with different treatment combinations of N, P and K, two plots received 2.5 and 5.01 ha-1 and one plot was kept as absolute control. French bean (cv. Anupam) was grown in these sub-plots for investigation during rabi. Highest pod yield, uptake of N, P and K of french bean was achieved in B-III block. Mean pod yield varies from 57.6 to 75.0 q ha-1 whereas, uptake of N, P and K vary from 67.9 to 75.0, 49.0 to 56.6 and 69.9 to 84.9 kg ha-1 respectively. Targeted yield equations for french bean were developed using the Ramamoorthy's targeted yield approach for site specific integrated nutrient management. [ABSTRACT FROM AUTHOR]