Integrated management of Sesbania, Azolla and urea nitrogen in lowland rice under a rice–wheat cropping system

1989 ◽  
Vol 113 (2) ◽  
pp. 203-206 ◽  
Author(s):  
B. S. Mahapatra ◽  
G. L. Sharma
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Nitrogen Uptake ◽  
Integrated Management ◽  
Cropping System ◽  
Residual Effects ◽  
Split Application ◽  
Green Manuring ◽  
Rice Yields ◽  
Different Sources

SUMMARYA two-year field experiment on a mollisol at Pantnagar showed that organic sources of N gave generally higher rice yields than the equivalent split dressing of prilled urea (PU). In 1985/86, Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha) and, in 1986/87, Sesbania (40 kg N/ha) + Azolla (40 kg N/ha) gave significantly higher yields than a split application of 80 kg N/ha as PU. Yield increases were attributed to significant variations in panicles/m2, filled spikelets/panicle and nitrogen uptake by the crop. These components, and grain yield, were significantly correlated with wet soil NH+4-N, which was increased by organic manuring. Wheat grown after each rice crop showed significant residual effects of the different sources of N applied to rice.

Integrated management of straw and urea nitrogen in lowland rice under a rice-wheat rotation

1991 ◽  
Vol 116 (2) ◽  
pp. 217-220 ◽  
Author(s):  
B. S. Mahapatra ◽  
G. L. Sharma ◽  
Nayab Singh
Keyword(s):  
Field Experiment ◽  
Integrated Management ◽  
N Uptake ◽  
Residual Effects ◽  
Organic N ◽  
Rice Grain ◽  
Split Application ◽  
Inorganic N ◽  
Rice Yields ◽  
Straw Application

SUMMARYThe average yields of a 3-year field experiment (1985/86–1987/88) on a mollisol at Pantnagar showed that, at 87 kg N/ha, applying urea supergranules (USG) gave 0·47 t/ha more rice grain than split application of prilled urea (PU). The data also showed that, at this rate of N, one-third (29 kg N/ha) of inorganic N can be substituted by fresh straw (wheat or rice) applied at planting to give similar rice yields. However, at a total of 58 kg N/ha, 29 kg N/ha applied as straw with 29 kg N/ha of PU or USG reduced yield compared with 58 kg N/ha of PU or USG alone, except in 1986/87. Yield differences were attributed to differences in number of panicles/m2, N uptake by the crop and mean wet soil NH4+-N obtained at various stages of crop growth during 1986/87 and 1987/88. Wheat grown after rice in 1985/86 and 1986/87 showed significant residual effects in plots with straw application and these were correlated with the rate of hydrolysable organic N (HN) obtained after rice.

EFFECT OF WHEAT, LEGUME AND LEGUME-ENRICHED WHEAT RESIDUES ON THE PRODUCTIVITY AND NITROGEN UPTAKE OF RICE-WHEAT CROPPING SYSTEM AND SOIL FERTILITY

2001 ◽  
Vol 49 (4) ◽  
pp. 369-378 ◽  
Author(s):  
S. N. SHARMA ◽  
R. PRASAD
Keyword(s):  
Adverse Effect ◽  
Soil Fertility ◽  
Nitrogen Uptake ◽  
Green Manure ◽  
N Uptake ◽  
Cropping System ◽  
Available P ◽  
Fertilizer N ◽  
Organic C ◽  
Green Manuring

Field experiments were conducted for two crop years at the Indian Agricultural Research Institute, New Delhi to study the effect of enriching wheat residue with legume residue on the productivity and nitrogen uptake of a rice-wheat cropping system and soil fertility. The incorporation of wheat residue had an adverse effect on the productivity of the rice-wheat cropping system. When it was incorporated along with Sesbania green manure, not only did its adverse effect disappear but the response to fertilizer N was also increased. There was no response to fertilizer N when Sesbania green manure was incorporated. When wheat residue was incorporated along with Sesbania green manuring, rice responded significantly to fertilizer N up to 120 kg N ha-1 in the first year and to 60 kgN ha-1 in the second year and at these levels of N, Sesbania + wheat residue gave 0.8 to 1.2 t ha-1 more grain, 0.6-1.0 t ha-1 more straw and 8-15 kg ha-1 more N uptake of rice resulting in 0.04-0.17% more organic C, 3-8 kg ha-1 more available P and 17-25 kg ha-1 more available K content in the soil than wheat residue alone at the same rates of N application. The respective increaseas caused by Sesbania green manure + wheat residue over Sesbania green manure alone were 0.3-0.5 t ha-1 in the grain and straw yield, 1-9 kg ha-1 in the N uptake of rice, 0.02-0.10% in organic C, 1-8 kg ha-1 in available P and 35- 70 kg ha-1 in available K content in the soil. These treatments also gave higher residual effects in succeeding wheat than wheat residue alone. The incorporation of residues of both wheat and Sesbania is thus recommended to eliminate the adverse effect of wheat residue and to increase the beneficial effects of Sesbania green manuring.

Contribution of legumes to the fertilizer nitrogen economy in a maize-based cropping system

1985 ◽  
Vol 105 (3) ◽  
pp. 491-493 ◽  
Author(s):  
R. K. Singh ◽  
R. De ◽  
R. B. Lal
Keyword(s):  
Pisum Sativum ◽  
Field Experiment ◽  
Grain Yield ◽  
Cropping System ◽  
Lathyrus Sativus ◽  
Trifolium Alexandrinum ◽  
Maize Crop ◽  
Egyptian Clover ◽  
Fertilizer Nitrogen ◽  
Cropping Seasons

SUMMARYA field experiment conducted for two cropping seasons (1976–7 and 1977–8) showed that a fodder crop of Egyptian clover (Trifolium alexandrinum) increased the grain yield of a subsequently grown maize crop. Lathyrus (Lathyrus sativus) and peas (Pisum sativum) were less effective in this regard.

Comparative response of groundnut and wheat to phosphorus in a groundnut–wheat rotation

1980 ◽  
Vol 94 (3) ◽  
pp. 691-696 ◽  
Author(s):  
N. S. Pasricha ◽  
M. S. Aulakh ◽  
N. S. Sahota ◽  
H. S. Baddesha
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Total Yield ◽  
Direct Application ◽  
Residual Effects ◽  
Residual P ◽  
Pod Yield ◽  
Cropping Sequence ◽  
Comparative Response ◽  
P Application

SummaryPod yield of groundnut and grain yield of wheat grown in that sequence was compared as affected by date of sowing and response to direct, residual and cumulative P application over 3 years in a field experiment. Total yield of groundnut and wheat was higher when groundnut was sown on 22 June and the following wheat on 1 November than when groundnut was sown on 6 July, followed by wheat sown on 16 November. Limited P requirement of groundnut was indicated by the small and inconsistent response to applied P on soil low in available P. Wheat responded to the second increment of P and direct application to wheat proved more effective than residual effects of previous application. Differential response of wheat to direct and residual P application in the groundnut-wheat cropping sequence indicates that P applications are more effective for wheat than groundnut, and groundnut can grow well on the residual P that remained in the soil.

scholarly journals Use of Abattoir Wastewater Compost as Organic Fertilizer for Rice Production on a Ultisol in Delta State, Nigeria

2020 ◽  
Vol 10 (2) ◽  
pp. 682-689
Author(s):  
Smart Augustine Ojobor ◽  
Collins N Egbuchua
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Block Design ◽  
Organic Fertilizer ◽  
Growth And Yield ◽  
Residual Effects ◽  
First Year ◽  
Rice Yields ◽  
Abattoir Wastewater ◽  
Nutrient Changes

The research was conducted to monitor the influent of abattoir wastewater compost on rice growth and yield in Benin-Owah River Basin in Illah, Delta State, Nigeria. The compost was applied at 0, 2.5, 5.0, 10 t/ha, and NPK15:15:15 at 250 kg/ha laid in randomized complete block design with four replicates. Rice seeds were sown for two years, and residual effects were evaluated in the third year. Rice plant height, stem circumference, and the number of tillers was measured at two weeks intervals while rice yields have taken at harvest. Soil samples were taken yearly to monitor nutrient changes. Data obtained were analyzed with analysis of variance and mean separated with Duncan Multiple Range Test at α0.05. In the first year, NPK15:15:15 significantly gave the highest dry matter (6.28±1.45 t/ha) and grain yield (2.4±0.53 t/ha). While in the second year, 10 t/ha treatment produced the dry matter (7.69±1.60 t/ha) and grain yield (2.6±0.53 t/ha). In a residual study, the highest grain yield (2.8±0.72 t/ha) was produced in the plot treated with 10 t/ha, and it also gave the highest pH, organic carbon, total nitrogen, and available P content. The compost at the rate of 10 t/ha can increase soil fertility and rice yield.

Influence of Split Application of Potassium on Yield and Yield Contributing Characters of rice cultivars- BR11 and Nizersail

2010 ◽  
pp. 84-89
Author(s):  
SN Mahfuza ◽  
MN Islam ◽  
Shamima Aktar ◽  
MR Amin ◽  
MA Islam
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Harvest Index ◽  
Rice Cultivars ◽  
Split Application ◽  
Rice Varieties ◽  
Increasing Trend ◽  
Almost All

Influence of split application of K on the sterility of BR11 and Nizersail was investigated in a field experiment conducted at the Bangladesh Agricultural University farm, Mymensingh during T. Aman season of 2003. The two rice varieties BR11 and Nizersail were grown with potassium applied at 70 kg and 60 kg K/ha, respectively. Split application of K showed similar effect of increasing trend in all the crop characters with the increase of the split applications from 1 to 3. Four splits were inferior to all. Three split of potassium showed superiority over 2, 1and 4 splits in almost all the crop characters, where the performance of Nizersail seemed to be better except in respect of sterile spikelets, grain yield and harvest index, where the superiority of BR11 was observed.

scholarly journals Residual Effect of Different Sources of Nutrients on Available NPK in Soil after Harvest of Maize in Rice Fallow Maize Cropping System

2019 ◽  
pp. 1-11
Author(s):  
Mohana Rao Puli ◽  
P. R. K. Prasad ◽  
P. Ravindra Babu ◽  
K. L. Narasimha Rao ◽  
G. Subbaiah
Keyword(s):  
Block Design ◽  
Residual Effect ◽  
Cropping System ◽  
Maize Crop ◽  
Green Manuring ◽  
Randomized Block Design ◽  
Agricultural College ◽  
Main Plot ◽  
To Receive ◽  
Different Sources

A field experiment was conducted for two consecutive years (2011-2012 and 2012-2013) on fine texture soils of Agricultural college farm, Bapatla. The experiment was laid out in a randomized block design in kharif season with four treatments. The treatments consisted of M1 (RDF (Recommended dose of fertilizers) - Control), M2 (10t FYM (Farm Yard Manure) ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). During the immediate rabi, the experiment was laid out in a split-plot design without disturbing the soil for succeeding maize with the four treatments given to kharif rice as main plot treatments and each of these divided into five sub-plots to receive five levels of fertilizer NPK application viz., N1 - 75% NPK, N2 - 100% NPK, N3 - 125% NPK, N4 - 150% NPK and N5 - 175% NPK for succeeding maize. Data collected on available NPK after harvest of maize crop were significantly increased with the application of 100% NPK in combination with FYM @10t ha-1 to preceding rice crop, irrespective of the NPK levels applied to succeeding maize crop. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.

scholarly journals Effects of cropping system and varieties on the rice growth and yield in acid sulphate soils of tidal swampland

2021 ◽  
Vol 6 (3) ◽  
pp. 163
Author(s):  
Izhar Khairullah ◽  
Wahida Annisa ◽  
Herman Subagio ◽  
Hendri Sosiawan
Keyword(s):  
Grain Yield ◽  
Cropping Systems ◽  
Cropping System ◽  
Growth And Yield ◽  
Critical Function ◽  
Acid Sulphate ◽  
Rice Growth ◽  
Acid Sulphate Soils ◽  
Rice Yields ◽  
Main Plot

Swampland plays a critical function in agriculture, specifically in growing rice production. The study aimed to determine the effects of cropping systems and varieties on the rice growth and yield in acid sulfate soil of tidal swampland. The experiment was conducted in a potential acid sulphate soils in Kapuas Regency, Central Kalimantan Province. The experiment was arranged in a split plot design with three replications. The main plot consisted of three HYV’s of rice, namely Inpara 8, Inpari 32, and Margasari. The subplot consisted of five cropping systems, namely, Jarwo 2:1A, Jarwo 2:1B, Jarwo 2:1C, Hazton, and Tegel.  The plot size was 4 m x 5 m. The variables observed included initial soil properties, plant growth, and yield components. The jajar legowo cropping system in this study was not able to increase rice yields in acid sulphate soil.  There was an interaction effect of cropping systems and varieties on the plant height and number of tillers at vegetative phase. At generative and pre-harvest phases, there was significant single effect of variety and cropping system in the planting height and number of tillers, respectively. Both cropping system and variety significantly affected the number of panicles per hill, while panicle length, grain per panicle and grain yield were only affected by variety.  There was no significant effect of both factors on the number of filled grains per panicle.  Inpara 8 variety achieved the highest grain yield, which was 6.78 ton.ha-1 or equivalent to 4.34 ton.ha-1 of 14 % water content. 

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