scholarly journals Evaluation of Crop and Soil Dynamics under Various Moisture Regimes and Moisture Conservation Techniques in Rice (Oryza sativa L.)

2021 ◽  
pp. 76-91
Author(s):  
Deepak Kumar ◽  
Adesh Singh ◽  
. Vivek ◽  
Mukesh Kumar ◽  
U. P. Shahi ◽  
...  
Keyword(s):  
Chlorophyll Content ◽  
Plant Height ◽  
Harvest Index ◽  
Oryza Sativa L ◽  
Soil Dynamics ◽  
Research Centre ◽  
Area Index ◽  
Transplanted Rice ◽  
Moisture Regimes ◽  
Growth Attributes

Aim: The present investigation was conducted to validate the various moisture regimes in transplanted rice and to study the effect of different moisture conservation techniques on performance of rice and soil after harvest of crop. Study Design: Experiment was laid out in split plot design (SPD). Place and duration of Study: The present investigation was conducted during the kharif season of 2018 and 2019 at the Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut (U.P.), India. Methodology: The main factor consists of the moisture regimes viz. irrigation as CF (I1), at FC (I2) and at 25%DASM (I3), the sub factors consist of six moisture conservation techniques viz. control, application of wheat residues @ 5t/ha, Pusa hydrogel @7.5 kg/ha, seed treatment with PF-6, PF-2 and IRRI-1 @ 4g/kg seed. Observation on plant growth attributes viz., plant height and leaf area index were recorded at 30, 60 DAT and at harvest stage of the crop, while chlorophyll content was recorded at 30 and 60 DAT. The harvest index was calculated on the net plot area basis. Observation on soil dynamics viz., available NPK and OC were recorded both before and after harvesting of crop. Results: Among different moisture regimes, the highest plant height, LAI and chlorophyll content was found under CF (I1) followed by FC (I2) during both the years. Among MCTs, the highest values of growth attributes and harvest index of rice were found with application of wheat residue @ 5 t/ha followed by Pusa hydrogel @ 7.5 kg/ha during both the years. Maximum value of harvest index was recorded under CF during first year, while it was highest under FC during 2019. Slight improvement in available nutrients were observed at 25% DASM treatment of moisture regimes and wheat residues @ 5 t/ha treatment of moisture conservation techniques over their other counterparts during both the years of experimentation. Conclusion: On the basis of study, it may be concluded that irrigation should be scheduled at FC (2-3 days after disappearance of water on surface) in transplanted rice and application of wheat residues @ 5 t/ha in rice is an appropriate moisture conservation technique for improving the physiological growth and productivity, besides enhancing the soil fertility.

scholarly journals Impact of Moisture Content and Weed Management on Direct Seeded Rice Quality

2019 ◽  
pp. 1-6
Author(s):  
Alisha Kumari ◽  
Rajan Kumar ◽  
Sweeti Kumari ◽  
Rinki Kumari Kumari
Keyword(s):  
Weed Management ◽  
Harvest Index ◽  
Management Practices ◽  
P Uptake ◽  
Research Centre ◽  
Rice Grain ◽  
Moisture Regimes ◽  
Direct Seeded ◽  
Crop Research

A field experiment was conducted during rainy (kharif) season of 2016 at Crop Research centre Pusa, Bihar to investigate the “Effect of Moisture Regimes and Weed Management on quality of Direct Seeded Rice”. The treatments consisted of three moisture regimes in main plots and five weed management practices in sub plots. The results showed that grain (3.62 t/ha) and straw yields (52.44 q/ha), harvest index (40.83%), P uptake (10.97 kg/ha) by rice grain were maximum with 3 days Disappearance of Ponded Water(DPW) which were significantly superior to 5 and 7 DPW but N (42.19 kg/ha) and P uptake (10.97 kg/ha) by rice grain, N (30.53 kg/ha), P (8.41 kg/ha) and K (74.47 kg/ha) uptake by straw were statistically at par with 5 DPW. With regard to weed management grain yield(35.62 q/ha) was maximum with W4 treatment of weed management which was significantly superior to W2, W1 and W5 but was statistically at par with W3 treatment while, straw yield (45.12 q/ha), N(41.37 and 29.75 kg/ha), P(10.72 and 8.18 kg/ha) and K(8.80 and 7.58 kg/ha) uptake by rice grain and straw were significantly superior to W1 and W5 and were comparable to W3 and W2 treatments.  In harvest index (40.97%), W4 treatment was significantly superior to all the treatments. N, P and K content in grain and straw did not vary significantly with varying moisture regimes weed management treatments.

scholarly journals Comparing Correlation Coefficients and Path Analysis in Different Populations of Rice (Oryza sativa L.)

2020 ◽  
pp. 1-11
Author(s):  
Anjani Kumar ◽  
D. N. Singh ◽  
Krishna Prasad ◽  
Avinash Pandey
Keyword(s):  
Path Analysis ◽  
Plant Height ◽  
Harvest Index ◽  
Oryza Sativa L ◽  
Grain Weight ◽  
Path Coefficient ◽  
Panicle Length ◽  
Biomass Harvest ◽  
Different Populations ◽  
Positive Effect

This study performed to determine the correlation, their comparison and path coefficients of yield and yield contributing characters by using F2 (BPT-5204 /IR-64Drt1) their two parents separately and the joint parental populations. In this study, the computations for testing the significance of the difference between the 15 traits of different populations of rice determined from 324 F2, 9 IR-64Drt1 (P1), 9 BPT-5204 (P2) and 18 joint parental population. Results showed that the correlation of F2 indicated that the number of total tillers per plant, number of panicles per plant, plant height, panicle length, biomass, harvest index and yield per panicle were positive and significant association with yield per plant. Correlation of IR-64Drt1 stated that the plant height, panicle length, biomass and harvest index were positive and significant association with yield per plant. Correlation of BPT-5204 shown that the secondary branches per panicle and hundred-grain weight exhibited positive and significant association with yield per panicle. Correlation of the joint parent indicated that the plant height, panicle length, grain length, grain width, hundred-grain weight, biomass, harvest index and yield per panicle had exhibited positive and significant association with yield per plant. Path coefficient analysis indicated that harvest index had the highest direct positive effect (0.582) on yield per plant in the F2 population. However, the panicles per plant had the highest direct positive effect (1.481) on yield per plant IR-64Drt1 population. The total tillers per plant had the highest direct positive effect (1.821) on yield per plant in BPT-5204 population. In the joint population of BPT-5204 and IR-64Drt1, path analysis of yield components revealed that the biomass had the highest direct positive effect (0.658) on yield per plant. Information obtained in this study revealed that traits, the harvest index, biomass and panicles per plant are suggested as selection indices for grain yield improvement at segregating populations of rice.

scholarly journals EVALUATION OF EARLY POST-EMERGENCE HERBICIDE APPLICATION ON WEED CONTROL, CROP GROWTH AND NUTRIENT UPTAKE IN TRANSPLANTED RICE (ORYZA SATIVA)

2020 ◽  
Vol 21 (supplement 1) ◽  
Author(s):  
T. Srinithan ◽  
K. Arivukkarasu Arivukkarasu ◽  
P. Sivasakthivelan ◽  
R. Rex Immanuel
Keyword(s):  
Leaf Area Index ◽  
Nutrient Uptake ◽  
Leaf Area ◽  
Plant Height ◽  
Weed Control ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Area Index ◽  
Transplanted Rice ◽  
Matter Production

A field experiment was conducted during Kuruvai season at the Experimental Farm, Department of Agronomy, Annamalai University to evaluate the performance of early post emergence application of herbicides on weed control in transplanted rice. The experiment was carried out in a Randomized Block Design with eight treatments and three replications. All the imposed treatments significantly influenced the weed parameters and crop parameters in rice. The experimental results revealed that, hand weeding twice at 20 and 40 DAT recorded the lowest total weed count (13.74), highest weed control efficiency (WCE) (92.79 per cent), highest plant height (85.76 cm), higher leaf area index (4.28), higher crop dry matter production (7689 kg ha-1 )and highest nutrient uptake by rice crop (134.79, 33.17, 99.41 kg of N, P2O5 , K2O ha-1, respectively) which was statistically on par with application of penoxsulam + cyhalofop butyl@135 g ha-1 (premix)(15 DAT) that recorded the total weed count (16.74), weed control efficiency (91.21 per cent), plant height (85.03cm), leaf area index (4.19), dry matter production (7567 kg ha-1), crop nutrient uptake (132.37 , 32.48, 97.25 kg of N, P2O5 , K2O ha-1, respectively). Highest total weed count, with lowest plant height, leaf area index, crop dry matter production and crop nutrient uptake were recorded with unweeded control.

scholarly journals INFLUENCE OF NITROGEN AND PHOSPHORUS LEVEL FOR THE PERFORMANCE OF FRENCH BEAN (PHASEOLUS VULGARIS L.)

2020 ◽  
Vol 4 (1) ◽  
pp. 34-38
Author(s):  
Nasrin Ara Khondoker ◽  
F M Jamil Uddin ◽  
Md. Abdur Rahman Sarker
Keyword(s):  
Grain Yield ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Harvest Index ◽  
Dry Matter ◽  
French Bean ◽  
Nitrogen And Phosphorus ◽  
Stover Yield ◽  
Biological Yield ◽  
Four Levels

The field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from November 2017 to February 2018 in order to assess the effect of nitrogen and phosphorus levels and their interaction on the performance of French bean. The experiment consisted of four levels of nitrogen viz. 80, 100, 120, 140 kg nitrogen ha-1 and four levels of phosphorus viz. 15, 20, 25 and 35 kg phosphorus ha-1. The experiment was laid out in Randomized Complete Block Design with three replications. In case of nitrogen the highest plant height, branches plant-1, chlorophyll content, dry matter, number of effective pods plant-1, length of pod, 1000-grain weight, grain yield, stover yield, biological yield and harvest index were observed in 120 kg nitrogen ha-1. Considering yield attributes against phosphorus treatment the highest plant height, branches plant-1, chlorophyll content, dry matter, length of pod, 1000-seeds weight, grain yield, stover yield, biological yield and harvest index were observed in 25 kg phosphorus ha-1. In case of interaction effect the highest plant height, branch plant-1, chlorophyll content, dry matter, number of effective pods, length of pod, 1000-grain weight, grain yield, stover yield, biological yield and harvest index were observed in 120 kg nitrogen ha-1 and 25 kg phosphorus ha-1. The results obtained in experiment indicate that there is a scope to increase the yield of French bean by applying proper dose of nitrogen and phosphorus fertilizer.

scholarly journals GENETIC DIVERSITY IN SPRING WHEAT GENOTYPES UNDER DROUGHT STRESS IN BANGLADESH

2013 ◽  
Vol 26 (1) ◽  
pp. 01-10
Author(s):  
M. M. Rahman ◽  
J. Rahman ◽  
M. A. K. Azad ◽  
N. C. D. Barma ◽  
B. K. Biswash
Keyword(s):  
Genetic Diversity ◽  
Drought Stress ◽  
Grain Yield ◽  
Chlorophyll Content ◽  
Plant Height ◽  
Research Centre ◽  
Wheat Genotypes ◽  
Days To Heading ◽  
Peduncle Length ◽  
Days After Anthesis

Thirty local and exotic wheat genotypes were evaluated in alpha lattice design with three replications at the Regional Wheat Research Centre (RWRC), Bangladesh Agricultural Research Institute (BARI), Rajshahi during Rabi season of 2010-11. The main objective of this study was to identify the extent of genetic diversity for traits related to drought tolerance mechanism. Genotypes were grouped into five different clusters. Cluster V comprised with the maximum number of genotypes (eleven) followed by cluster III with six and IV with five genotypes. Inter-cluster distance was maximum between clusters I and II (15.03) indicated wide genetic diversity between the genotypes of these two clusters followed by the distance between cluster I and III (14.20). The highest inter genotypic distance (1.5566) was estimated between the genotypes G4 and G18 and the lowest (0.2240) between G13 and G14. Among the characters, early ground coverage, initial plant m-2, days to heading, peduncle length and chlorophyll content of flag leaf at 14 days after anthesis contributed the maximum for divergence in the genotypes investigated. It revealed that these parameters contributed more to grain yield under drought stress. Cluster I had the highest grain yield ha-1, spikes m-2, TDM and LAI at 86 DAS, CTgf, peduncle length and plant height. Cluster II exibitted the lowest days to heading, days to maturity, plant height, CTgf , chlorophyll content at 14 days after anthesis, LAI, TDM and spikes m-2 . Crosses between I and II, I and III, I and IV, III and V and II and V have greater chance to generate more heterotic F1s. Considering magnitude of genetic distance, contribution of different traits towards total divergence, magnitude of cluster means for different traits and performance the genotypes; G30, G6 and G28 of cluster I, G18 and G7 of cluster II and G25, G27 , G19, G2 and G1 of cluster V could be utilized as parents for future hybridization programme to improve drought-tolerant high yielding wheat crop.DOI: http://dx.doi.org/10.3329/bjpbg.v26i1.19977

scholarly journals Physiological and Morphological Responses of Cassava Genotypes to Fertilization Regimes in Chromi-Haplic Acrisols Soils

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1757
Author(s):  
Sydney Mwamba ◽  
Peter Kaluba ◽  
Dany Moualeu-Ngangue ◽  
Etti Winter ◽  
Martin Chiona ◽  
...  
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Harvest Index ◽  
Morphological Traits ◽  
Root Diameter ◽  
Light Extinction ◽  
Tuber Number ◽  
Root Yield ◽  
Area Index ◽  
Npk Fertilizer

The objective of this study was to evaluate the performances of three cassava genotypes on yield, physiology and morphological traits under different fertilization regimes. A field experiment was conducted in a split-plot design for two consecutive seasons in the Mansa district of the Luapula Province of Northern Zambia in the highly weathered Chromi-haplic Acrisol soils. Four fertilization regimes, control-M3, lime-M1, NPK fertilizer-M4 and NPK fertilizer + lime-M2 were the main plots, while three varieties (Mweru-V1, Bangweulu-V2 and Katobamputa (local)-V3) were subplots. Periodic measurements of leaf area index, light interception, yield and yield components from 75 days after planting (DAP) up to 410 DAP and daily weather measurements of data were recorded. Fertilization significantly increased the radiation use efficiency (RUE) and light extinction coefficient (K) in two seasons compared to the control. Significant fertilization regimes and varietal effects were observed for seasonal LAI, stem yield, root yield, biomass, harvest index (HI), tuber number, root diameter, plant height and SPAD (chlorophyll index). A significant year’s effects on root yield, yield components and physiological performances were observed while significant fertilization × variety interaction was observed on seasonal LAI, tuber number, root diameter, plant height and SPAD. Significant fertilization × year interaction effects were observed on root yield, yield components and physiological performances. Variety × year interaction was significant for seasonal LAI, stem yield, harvest index and plant height and no three-way interactions were observed on all the traits. NPK fertilizer + lime and NPK fertilizer treatments may be adopted to increase the response of cassava varietal yield, physiology and morphological traits in low soil nutrient conditions under high rain-fed conditions.

scholarly journals Combined effect of land preparation methods and planting geometry on the performance of machine transplanted rice (Oryza sativa L.)

2016 ◽  
Vol 8 (4) ◽  
pp. 1855-1860
Author(s):  
R. B. Negalur ◽  
A. S. Halepyati ◽  
B. G. Masthanaredy
Keyword(s):  
Oryza Sativa ◽  
Dry Matter ◽  
Oryza Sativa L ◽  
Research Station ◽  
Dry Matter Accumulation ◽  
Preparation Methods ◽  
Area Index ◽  
Land Preparation ◽  
Transplanted Rice ◽  
Planting Geometry

Field experiment on effect of land preparation methods and planting geometry on growth and yield of machine transplanted rice (Oryza sativa L.) was conducted at Agricultural Research Station, Gangavathi, University of Agricultural Sciences, Raichur, Karnataka during kharif, 2012 and 2013 in clay soil under irrigated condition.Pooled mean indicated that, among the different land preparation methods and planting geometry puddling with rotovator fb levelling with spike tooth harrow and planting geometry of 30 x 21 cm recorded significantly higher growth parameters viz., Leaf area index ( 2.87 and 1.56, respectively) , dry matter accumulation in leaves (13.44 and 14.43 g plant-1, respectively), dry matter accumulation in stem (26.25 and 29.31 g plant-1 , respectively), dry matter accumulation in panicles ( 37.21 and 41.38 g plant-1 , respectively), total dry matter accumulation in plant (73.82 and 85.12 g plant-1, respectively), thousand grain weight (18.17 and 18.71,g respectively), grain yield (4906 and 5192 kg ha-1 , respectively), straw yield (6247 and 6508 kg ha-1, respectively), gross returns (Rs. 87,733 and 92779 ha-1, respectively), net returns (Rs. 46329 and 50007 ha-1) and benefit cost ratio (2.14 and 2.20 ). Puddling with rotovator fb levelling with spike tooth harrow and 30 x 21 cm spacing were found better for transplanting of rice by self propelled mechanical transplanter. Land preparation would be helpful as one of the important pre requirement in machine transplanting of rice, which in turn will decide the time (time required for settling of soil particle) and type of machine to be used for transplanting of rice.

scholarly journals Validation of Maize (Zea mays L.) Hybrids for the Study on Variability, Trait Association, and Path Analysis

2021 ◽  
pp. 298-308
Author(s):  
M. Ramesh Kanna ◽  
Hiramani Barman ◽  
Kasireddy Sivasankarreddy ◽  
Dikshita Gogoi ◽  
T. V. Rao ◽  
...  
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Height ◽  
Harvest Index ◽  
Area Index ◽  
Ear Height ◽  
Positive Direct ◽  
Pollen Shed

The present investigation was conducted with nine genotypes in randomized block design during Rabi, 2019-20 at the instructional-cum-research farm, Assam Agricultural University, Jorhat. All the characters exhibited significant genotypic mean squares in analysis of variance except anthesis silking interval, kernel rows per ear and 100 kernel weights. High heritability coupled with high genetic advance was observed for the traits plant height, ear height, ears per plant, ear length, kernels per row, chlorophyll content, leaf area index 60 days after sowing (LAI 60 DAS), LAI 90 DAS, harvest index, grain yield per plant and grain yield per hectare. Significant genetic association of grain yield per plant and grain yield per hectare with days to 50% pollen shed, days to 50% silk, days to 100% dry husk, ear height, kernels per row, LAI 60DAS and LAI 90 DAS. Genotypic path analysis revealed that the characters, days to 50% silk, days to 100% dry husk, plant height, ears per plant, ear diameter and harvest index had the highest positive direct effects on grain yield per hectare while days to 50% pollen shed and ear height had the highest negative direct effect on grain yield per hectare. The hybrids namely, PAC 751, CP 333 and PAC 751 ELITE, were found to be the three best hybrids to possess a high estimate of desirable traits such as days to 50% pollen shed, days to 50% silk, days to 100% dry husk, plant height, ear height, ear diameter, leaf area index at 60 days after sowing, lea area index at 90 days after sowing, grain yield per plant and grain yield per hectare.

scholarly journals DOSIS PUPUK KANDANG DAN UMUR PANEN PADA PRODUKSI BABY KANGKUNG (IPOMOEA REPTANS)

2018 ◽  
Vol 32 (2) ◽  
pp. 68
Author(s):  
Leviana Eka Vivia ◽  
Trijono Djoko Sulistyo ◽  
Mujiyo Mujiyo
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Height ◽  
Harvest Index ◽  
Free Field ◽  
Dry Weight ◽  
Internode Length ◽  
Fresh Weight ◽  
Area Index ◽  
Number Of Leaves

<p align="left"><em>The research aims to assess the yield of baby kale that can be consumed almost all of the parts and generate organic manure free. Field research was conducted in Sindon Village, Ngemplak, Boyolali in September to October 2016. The research method uses Randomized Complete Block Design factorial with two factors, these are the dosage of manure and the age of harvest. Manure consisted of 4 doses O1 (0 ton/ha), O2 (6 tons/ha) and O3 (8 tons/ha) and O4 (10 tons/ha), and age of harvest consisted of P1 (16 DAS), P2 (20 DAS), and P3 (24 DAS). Variables observed were plant height, number of leaves, internode length, fresh weight, dry weight, leaf area index, and harvest index. The result showed that age of harvest has significant influence plant height, internode length, the number of leaves, leaf area index, fresh weight, dry weight, and harvest index. Manure doses only influence dry weight. Manure dosage of 8 ton/ha and harvest age of 16 DAS is the best combination of baby kale. Manure dosage of 10 ton/ha and harvest age of 16 DAS produce baby kale that can be consumed almost in all parts of the plant with the highest harvest index that is equal to 0.83.</em></p>

scholarly journals Effect of Nutrient Management on Two Varieties (Hybrid and Local) of Maize in Western Inner Terai of Nepal

2020 ◽  
Vol 8 (2) ◽  
pp. 191-198
Author(s):  
Shila Bashyal ◽  
Padam Bahadur Poudel ◽  
Jenny Budha Magar ◽  
Laxmi Dhakal ◽  
Suraj Chad ◽  
...  
Keyword(s):  
Plant Height ◽  
Harvest Index ◽  
Management Practices ◽  
Nutrient Management ◽  
Block Design ◽  
Test Weight ◽  
Area Index ◽  
Maize Varieties ◽  
Biological Yield ◽  
Hybrid Maize

In Nepal, the productivity of maize is very low in comparison with developed countries. The use of hybrid varieties with proper nutrient management helps to unlock the high yielding potential of maize. So, the experiment was conducted at Fulbari, Dang, Nepal from June 30, 2019 to October 16, 2019 to find the yield performance of two maize varieties (Local and Hybrid) under different nutrient management. The study was conducted in factorial randomized complete block design with three replications and eight treatments. Treatments consist of different combinations of two maize varieties (Local and hybrid) and four different nutrient management practices. Significant effects of Nutrient management were observed on plant height, l eaf area index (LAI), kernels per row, kernels per cob maize, test weight, biological yield, economic yield and harvest index of maize. Similarly, significant effects of varieties was observed on plant height, leaf number, LAI, cob length, kernel rows per cob, kernels per kernel row, kernels per cob maize, test weight, biological yield, economic yield and harvest index of maize. Interaction effect of Nutrient management and varieties was found significant on LAI, kernel rows per cob, kernels per kernel row, kernels per cob maize, test weight, biological yield, economic yield and harvest index of maize. The overall performance of hybrid maize under Leaf color chart (LCC) based nutrient management was found better than other treatments. Therefore, production of Hybrid maize under LCC based nutrient management is suggested. Int. J. Appl. Sci. Biotechnol. Vol 8(2): 191-198

Sign in / Sign up

Export Citation Format

Share Document