scholarly journals Effects of potassium humate and chemical fertilizers on growth, yield and quality of rice (Oryza sativa L.)

2015 ◽  
Vol 43 (2) ◽  
pp. 183-189
Author(s):  
Dileep Kumar ◽  
AP Singh ◽  
P Raha ◽  
CM Singh

A pot experiment was conducted in Kharif 2009 and 2010 to study the effect of potassium humate and chemical fertilizers on growth and yield attributes of rice (Oryza sativa L). Potassium humate was applied at the rate of 0, 5 and 10 mg/kg soil along with 100 and 75% recommended dose of fertilizers NPK (60, 30, 30 mg/kg) and 12.5 mg/kg zinc sulphate was also applied. Addition of 10 mg/kg PH along with 100% NPK fertilizers and 12.5 mg/kg zinc sulphate caused significant increase in plant height, number of tillers, panicle height, panicle length, test weight, straw yield and yield of rice as compared to 100 and 75% NPK alone. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21671 Bangladesh J. Bot. 43(2): 183-189, 2014 (September)

Author(s):  
Noyingthung Kikon ◽  
Khroteü Riste ◽  
T. Ohain

The present investigation was conducted to study the growth and yield response of local rice cultivars to application of recommended dose of NPK fertilizers under upland rainfed conditions. It was found that the application of recommended NPK fertilizer dose (60:30:30 kg/ha) resulted in significantly superior expression of rice growth and yield attributes by the different cultivars recording increased grain yields up to 36.51 q/ha and straw yields of 60.96 q/ha. Among the 8 local rice cultivars tested signification variations in plant growth, yield and yield attributes were observed. However, the cultivar ‘Muntse’ was found to be the most adaptable rice variety recording the highest grain yield of 42.94 q/ha followed by ‘Temeseng’, ‘Leikhumo’ and ‘Chongloi Mann’. Application of recommended fertilizer dose (60:30:30 kg/ha) to the cultivar ‘Mumtse’ was found to record the highest gross return/ha (Rs.51,342), net return/ha (Rs. 30,169) as well as BCR (1.42) compared to the rest of the treatments tested.


2015 ◽  
Vol 1 (01) ◽  
pp. 57-68
Author(s):  
Rana Pratap Singh ◽  
Vishalakcchi Ashok ◽  
Sanjeev Kumar

Field experiments were conducted during the Kharif season of the cropping years 2011 and 2012 at the Experimental Field Station of Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow to compare the efficacy of organic matrix entrapped chemical fertilizers i.e. Urea and DAP (OMECF) with the conventional chemical fertilizers (CCF) and no fertilizer (NF) for the cultivation of rice (Oryza sativa). The OMECF prepared in granular form contained cow dung, powder of neem leaves (Azadirachta indica), and clay soil (diameter of particles less than 0.02 mm) in 1:1:1 ratios and 15% saresh (plant gum of Acacia sp.) as binder a long with half and one fourth of the recommended dose of commercially available urea and DAP. Single basal application of OMECF showed an increase in plant growth in terms of fresh and dry weights, root length, shoot length, root and leaves numbers and levels of NO3-, NO2-, NH4 + and PO4 -in the rhizosphere and their accumulation in plant leaves.


2021 ◽  
Vol 23 (3) ◽  
pp. 279-285
Author(s):  

A field experiment on rice (Oryza sativa L.) crop was conducted at Rice Research Station, Kaul (Kaithal), India during kharif season of 2017 and 2018 to evaluate the optimum schedule of nitrogen application in the rice grown under early and late planting conditions. The treatments consisted of three timings of transplanting (3rd week of June, 1st week of July and 3 rd week of July), four levels of N (90, 120, 150 and 180 kg Nha-1) and four timings of N fertilizer application (½ at transplanting + ½ at 21 DAT, ½ at 21 DAT + ½ at 42 DAT, 1/3 at transplanting + 1/3 at 21 DAT + 1/3 at 42 DAT and LCC based N supply) and were laid out in split-plot design with transplanting time and N levels in main plots and N application time in sub-plots. The growth parameters (plant height, number of tillers/m2 and dry matter accumulation/m2), yield attributing characters (number of panicles/m2 and grains/panicle) and yield (grain and straw yield) of rice crop reduced significantly under late planting (3rd week of July) as compared to that under the two earlier plantings (3rd week of June and 1stweek of July) whereas the two earlier plantings were at par in respect of these parameters. The growth, yield attributes and the yield increased with every increase in N application rates but the increase was significant up to 150 kg Nha-1. The highest yield was (7.33 tha-1), however, obtained with the crop transplanted early (up to1st week of July) and supplied with 150 kg Nha-1.Application of N in three equal splits (at 0, 21 and 42 DAT or as per LCC schedule), being at par, resulted into higher yield (grain and straw) than the N application in two equal splits. The net returns and B: C ratio increased appreciably with increase in N application levels upto 150 kg Nha-1 obviously due to increase in crop yield.


2020 ◽  
Vol 1 (2) ◽  
pp. 115-119
Author(s):  
Shenoy H ◽  
◽  
Siddaraju M. N.

Field experiments were conducted during Kharif-2017 and 2018 at ICAR-Krishi Vigyan Kendra (KVK), Mangaluru of coastal Karnataka to study the effect of integration of organic and inorganic sources of nitrogen on the yield of midland rice. The results indicated that the integration of organic and inorganic sources of nitrogen significantly influenced the growth and yield attributes of rice. The highest grain yield (5434 and 5372 kg ha-1) and straw yield (6817 and 6927 kg ha-1) were recorded in the treatment comprising VC substituted with 50 percent recommended dose of nitrogen which was on par with PM substituted at 50 percent in both the years. A similar trend was also noticed in both the years for the growth and yield parameters where the highest plant height (94.93 and 96.30 cm) highest productive tillers (16.85 and 18.12) and longer panicle length (17.54 and 18.65 cm) was recorded in the treatment where 50 percent nitrogen was substituted by vermicompost compared to control. The remaining treatments of organic substitution ratios with urea also had a beneficial effect on yield and yield parameters of rice compared to control.


2021 ◽  
Vol 23 (2) ◽  
pp. 140-144
Author(s):  
Anil Kumar ◽  

A field experiment was conducted during rabi seasons of2017-19 at Panwari village, Agra (U.P.) to assess the effect of integrated potassium management on growth, yield and uptake of nutrient in wheat (Triticum aestivum). The experiment was laidout in a randomized block design with seven treatments and three replications. The results revealed that increasing levels of K fertilizers increased the growth and yield attributes up to 90 Kg K2O ha-1 over control. But the growth and yield attributes 0f wheat were maximum with the application of 150 Kg N + 60 Kg P2O5 + 60 Kg K2O + 5 t FYM ha-1. Increasing levels of NPK fertilizers increased the yield of wheat grain and straw over control. The maximum yield of grain(5.48 t ha-1) and straw(9.60 t ha-1) were recorded with N150P60K60FYM5. The increases in grain and straw yield with this treatment were 44.2 and 29.7% over control, respectively. The crop quality in respect of content and yield of protein increased significantly with conjoint use of fertilizers and maximum values were recorded with 150 Kg N + 60 Kg P2O5 + 60 Kg K2O + 5 t FYM ha-1 treatment. Increasing levels of NPK fertilizers up to N 150 P 60 K 90 also resulted in higher uptake of NPK by the crop and highest uptake of N, P, K and S by wheat crop was recorded with N150 P60 K60 FYM5 and the lowest in control. The soil organic carbon, available N, P and K content also improved with N150 P60 K60 FYM5 over control and lowest values of these parameters were recorded in control.


Author(s):  
V. A. Dobariya A. P. Patel

A field experiment was carried out at College Farm, Navsari Agricultural University, Navsari on clayey soils during summer season of the year 2019 to study the Effect of iron and zinc on growth, yield and quality of cowpea (Vigna unguiculata L.) under south Gujarat condition. The results of experiment indicated that growth and yield attributes viz., plant height at 60 DAS and at harvest, number of branches per plant, number of nodules per plant, number of pods per plant, pod length, seed and haulm yield (955 and 2008 kg/ha, respectively) and test weight increased significantly with soil application of FeSO4 @ 25.0 kg/ha which was significantly higher over control but remained at par with soil application of 12.5 kg FeSO4/ha. Similarly zinc is also an essential plant nutrient for plant growth and yield. Zinc application had also positive effect on growth and yield attributes viz., plant height at 60 DAS and at harvest, number of branches per plant, number of nodules per plant, number of pods per plant, pod length, seed and haulm yield (972 and 2030 kg/ha, respectively) and test weight increased significantly with soil application of ZnSO4 @ 25.0 kg/ha which was significantly higher over control but remained at par with soil application of 12.5 kg ZnSO4/ha. Significant improvement in protein content in seed with soil application of both FeSO4 and ZnSO4 @ 25.0 kg/ha.


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