An improved CROPR model for estimating cotton yield under soil aeration stress

2017 ◽  
Vol 68 (4) ◽  
pp. 366 ◽  
Author(s):  
Long Qian ◽  
Xiu-Gui Wang ◽  
Wen-Bing Luo ◽  
Zhi-Ming Qi ◽  
Huai-Wei Sun ◽  
...  
Keyword(s):  
Mean Squared Error ◽  
Accurate Estimation ◽  
Dry Matter Accumulation ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Additive Structure ◽  
Soil Aeration ◽  
Seed Cotton Yield ◽  
After Effect ◽  
Water Table Management

Accurate estimation of crop yield under aeration stress is crucial for field water table management. In this study, the CROPR crop model was improved in two aspects: (i) a new aeration factor, which was related to a drainage index, was proposed and used to represent the condition of soil aeration; and (ii) a multiplicative structure, instead of the original additive structure, was used in the calculation of dry matter accumulation to include the after-effect of aeration stress. Four-year lysimeter experiments on cotton (Gossypium hirsutum L.) growth under aeration stress were conducted from 2008 to 2011 to calibrate and validate both the original and improved CROPR. The results indicated that the improved CROPR performed better than the original CROPR and was suitable for simulating cotton yield under aeration stress. In the calibration, with the improved CROPR, the root-mean-squared error (RMSE) of seed cotton yield was 832.84 kg ha–1 with a normalised value (NRMSE) of 15.87%, whereas with the original CROPR, the RMSE was 973.03 kg ha–1 with an NRMSE of 18.55%. In the validation, with the improved CROPR, the RMSE of seed cotton yield was 686.22 kg ha–1 with an NRMSE of 14.87%; with the original CROPR, the RMSE was 1019.02 kg ha–1 with an NRMSE of 22.08%.

scholarly journals Growth and Yield of Bt Cotton Influence by Land Configuration and Nutrient Levels Under Rainfed Situation

2019 ◽  
pp. 1-7
Author(s):  
V. Ambika ◽  
G. S. Yadahalli ◽  
B. M. Chittapur ◽  
Shamrao Kulkarni ◽  
Vidhyavathi G. Yadahalli ◽  
...  
Keyword(s):  
Reproductive Organs ◽  
Growth And Yield ◽  
Research Station ◽  
Bt Cotton ◽  
Dry Matter Accumulation ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Plant Parts ◽  
Net Returns

A field experiment was conducted at main agriculture research station, Raichur (Karnataka, India) during Kharif 2016 to enhance the yield of Bt cotton and improve the economy of farmers under the rainfed situation. The experiment was laid out in split plot design with three land configuration practices as main plots and four different combinations of an organic and inorganic source of nutrients as subplots replicated thrice. The results showed that, significantly higher seed cotton yield (2834 kg ha-1) were recorded with land configuration practice of Ridges and Furrow method in conjunction with application of 90:45:45 NPK kg ha-1 (50% N through organic) when compared to Broad Bed and Furrow method and Flat Bed methods and their respective combination with different source of nutrients. This trend was also reflected in dry matter accumulation in various plant parts (leaves, stem and reproductive organs). The combined effect of Ridges and Furrow method and application of 90:45:45 NPK kg ha-1 (50% N through organic) also resulted in recording higher gross (Rs.1,53,018 ha-1) and net returns (Rs.1,07,67 ha-1) when compared to other treatment combinations. Therefore it was concluded that, land configuration practice of Ridges and Furrow method in combination with the application of 90:45:45 NPK kg ha-1 (50% N through organic) was found to be the best option to realise higher seed cotton yield and more economical.

scholarly journals Crop Geometry and Nitrogen Levels Influence on Growth, Yield and Economics of Compact Cotton (Gossypium hirsutum L.) in Rainfed Vertisols

2021 ◽  
pp. 28-37
Author(s):  
B. B. Nayak ◽  
S. Bharathi ◽  
M. Sree Rekha ◽  
K. Jayalalitha
Keyword(s):  
Growth And Yield ◽  
Research Station ◽  
Dry Matter Accumulation ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Area Index ◽  
Seed Cotton Yield ◽  
Nitrogen Levels ◽  
Net Returns ◽  
Crop Geometry

Aims: To study the effect of crop geometry and nitrogen levels on compact cotton genotype in rainfed vertisols condition. Study Design: The experiment was laid out in a randomized block design with a factorial concept with 3 levels of crop geometry and four levels of nitrogen with 12 treatment combinations and replicated thrice. Place and Duration of Study: A field experiment was conducted on vertisols under rainfed conditions at Regional Agricultural Research Station Lam, Guntur during the year 2018 – 2019. Methodology: The treatments consisted of three crop geometries S1 – 60 cm × 10 cm, S2- 75 cm × 10 cm, S3- 90 cm × 45 cm in combination with four nitrogen levels N1- 45kg N ha-1, N2- 90kg N ha-1, N3- 135 kg N ha-1, N4- 180 kg ha-1. Results: Closer crop geometry of 60 cm × 10 cm recorded taller plants and maximum dry matter accumulation, functional leaves per square meter, leaf area index, maximum chlorophyll content, number of bolls per square meter and seed cotton yield per ha-1, net returns and returns per rupee. However, the number of sympodial branches per plant and sympodial length was highest with wider crop geometry of 90 cm × 45 cm. All the growth and yield parameters recorded were maximum with the application of 180Kg N ha-1 than all the other levels of nitrogen tested. Conclusion: Overall, the results showed that the Crop geometry of 60cm × 10 cm  with application of 135 kg N ha-1  was found to be optimum to realize of maximum seed cotton yield and net returns.

Cover Crops Suppression of Palmer Amaranth (Amaranthus palmeri) in Cotton

2017 ◽  
Vol 32 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Matheus G. Palhano ◽  
Jason K. Norsworthy ◽  
Tom Barber
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Field Experiments ◽  
Palmer Amaranth ◽  
Cotton Yield ◽  
Cotton Production ◽  
Seed Cotton ◽  
Cereal Rye ◽  
Seed Cotton Yield ◽  
Weed Emergence

AbstractWith the recent confirmation of protoporphyrinogen oxidase (PPO)-resistant Palmer amaranth in the US South, concern is increasing about the sustainability of weed management in cotton production systems. Cover crops can help to alleviate this problem, as they can suppress weed emergence via allelochemicals and/or a physical residue barrier. Field experiments were conducted in 2014 and 2015 at the Arkansas Agricultural Research and Extension Center to evaluate various cover crops for suppressing weed emergence and protecting cotton yield. In both years, cereal rye and wheat had the highest biomass production, whereas the amount of biomass present in spring did not differ among the remaining cover crops. All cover crops initially diminished Palmer amaranth emergence. However, cereal rye provided the greatest suppression, with 83% less emergence than in no cover crop plots. Physical suppression of Palmer amaranth and other weeds with cereal residues is probably the greatest contributor to reducing weed emergence. Seed cotton yield in the legume and rapeseed cover crop plots were similar when compared with the no cover crop treatment. The seed cotton yield collected from cereal cover crop plots was lower than from other treatments due to decreased cotton stand.

scholarly journals Gene Action Studies in the Inheritance of Yield and Quality Attributing Traits in Diallel Cross of Cotton (Gossypium hirsutum L.)

2021 ◽  
Vol 9 (3) ◽  
pp. 105-109
Author(s):  
V. J. Zapadiya ◽  
Keyword(s):  
Plant Height ◽  
Block Design ◽  
F1 Hybrids ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Gene Effects ◽  
Partial Dominance ◽  
Seed Cotton Yield ◽  
Genetic Components

A field experiment was conducted to evaluate the 45 F1 hybrids derived from 10×10 half diallel fashion along with ten parents and one standard check GN.Cot.Hy-14 were sown in randomized block design with three replications during kharif -2017 at Cotton Research Station, Junagadh Agricultural University, Junagadh. The genetic components of variation were determined for 12 characters viz., days to 50% flowering, days to 50% boll opening, plant height (cm), number of monopodia per plant, number of sympodia per plant, number of bolls per plant, boll weight (g), seed cotton yield per plant (g), ginning percentage (%), seed index (g), lint index (g) and oil percentage (%).The estimate of the components of variation revealed significant results for both additive (D) as well as dominance effects (H1 and H2) for all the characters except plant height non-significant H2 component, but in majority of traits (except plant height, lint index) H1 was higher than D indicating dominance components were important in the inheritance of seed cotton yield and its components. The average degree of dominance (H1/D)1/2 was found to be more than unity for all the traits (except plant height, number of monopodia per plant and lint index indicating partial dominance) indicating over dominance. Asymmetrical distribution of positive and negative genes in the parents was observed for all the traits. High estimates of heritability in narrow sense was observed for days to 50% flowering, days to 50 % boll bursting, number of monopodia per plant, ginning percentage (%), lint index (g) and oil content (%) suggesting that selection based on these attribute would lead to rapid improvement. Due to preponderance of non-additive gene effects of seed cotton yield per plant and most of its component traits, heterosis breeding would also be practically feasible in cotton.

scholarly journals Genetics of Inheritance and Interrelationship of Various Agronomic Traits of F2 Population in Cotton (Gossypium hirsutum L.)

2019 ◽  
pp. 1-15
Author(s):  
Bilal Nawaz ◽  
Saira Sattar ◽  
Bilal Bashir ◽  
Muhammad Jamshaid ◽  
Khadim Hussain ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Fiber Strength ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Gossypium Hirsutum L ◽  
Seed Cotton Yield ◽  
F2 Population ◽  
Fiber Fineness ◽  
Boll Weight ◽  
Beak Size

Background: Cotton (Gossypium hirsutum L.) is grown in more than sixty countries worldwide. It is an important fiber crop in the world. It plays a vital role in our national economy being the source of earning of foreign exchange, therefore, it is considered to be the backbone of the economy of Pakistan. In Pakistan, millions of families are associated with cotton and textile industry for their livelihood.  Results: In this experiment F2 population of the cross L. A. Frego Bract x CIM-600 and their parents was sown in randomized complete block design with three replications during normal growing season of the year 2014 to sort out best performing genotypes for yield related traits. Analysis of variance (ANOVA) revealed that parental and their F2 population showed significant differences for all the observed agronomic traits (plant height, number of monopodia branches, number of sympodial branches, number of bolls per plant, boll weight, ginning out turn, bract type, boll shape, beak size, seed cotton yield, staple length, fiber strength and fiber fineness). Estimation of correlation revealed that seed cotton yield was found positively correlated sympodial branches, fiber fineness and boll weight while ginning out turn, bract type, beak size, staple length and fiber strength were negatively associated with seed cotton yield. Epistasis was not found to be involved in any of the traits. Conclusion:  The correlation and genetics study of various yield related traits provides us useful information for effective selection and sustainable breeding programs. Estimation of broad sense heritability ( ) in F2 populations for different traits vary as following order; ginning out turn>plant height>seed cotton yield>sympodia branches>fiber length>fiber strength>bolls per plant>monopodia branches>boll weight>fiber fineness with heritability 0.90, 0.79, 0.78, 0.75, 0.73, 0.71 0.67, 0.64, 0.63 and 0.50 respectively. Results suggested form heritability and correlation that these traits can be improved either through appropriate selection method or hybrid breeding programme.

scholarly journals Diagnosis and Recommendation Integrated System (DRIS) in Determining Mineral Status of Cotton in the Cotton Zones of Benin

2019 ◽  
pp. 1-13
Author(s):  
Isidore Amonmidé ◽  
Gustave D. Dagbénonbakin ◽  
P. B. Irénikatché Akponikpè ◽  
Emile C. Agbangba ◽  
Pierre G. Tovihoudji
Keyword(s):  
Nutrient Status ◽  
Nutrient Content ◽  
Integrated System ◽  
The Other ◽  
Chemical Characteristics ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Physical And Chemical ◽  
Made In

This study aimed at developing parameters of the Diagnosis and Recommendation Integrated System (DRIS) model for the assessment nutrient status for cotton grown in Benin.. Soil physical and chemical characteristics, leaves nutrient content (N, P, K, Ca, Mg) and seed-cotton yield were assessed on samples gathered from 150 farmers’ fields in 2018. Nutrient indices were computed using standard DRIS procedures. Results showed that phosphorus was in excess in the petiole and the whole leaves but in deficit in the limb. Potassium content was adequate according in the petiole and leaves but deficient in the limb. Ca content was limiting in the limb or the whole leaves and adequate in the petiole. Based on the diagnosis made in the petioles, Mg was deficient while adequate in the limbs and leaves. In the limb, the order of the macronutrients is as follows: K> P> N. On the other side, in the petiole and the whole leaves, the order of the macronutrients becomes: P> K> N. In the whole leaves and limb, the order of the secondary elements is as follows: Mg> Ca, whereas in the petiole the order of the secondary elements becomes: Ca> Mg.

scholarly journals RESPONSE OF COTTON TO NITROGEN FERTILIZER AND SPACING BETWEEN HOLES

2016 ◽  
Vol 47 (6) ◽  
Author(s):  
Alubaidi & et al.
Keyword(s):  
Nitrogen Fertilizer ◽  
Block Design ◽  
Lint Yield ◽  
Plant Spacing ◽  
Cotton Yield ◽  
Seed Cotton ◽  
College Of Agriculture ◽  
Seed Cotton Yield ◽  
Nitrogen Levels ◽  
Randomized Complete Block Design

This experiment was conducted at the farm of field crop department, College of Agriculture, University of Baghdad during two summer seasons (2010 and 2011) in order to know the response of cotton var. Lashata to nitrogen levels and spacing between holes. A randomized complete block design under arrangement of split plot with four replications was used. The plant spacing; 10, 20 and 30 cm between holes and 75 cm between rows considered as main plots, while three nitrogen levels (150, 200 and 250 Kg N.ha-1) are considered as sub plots. The results showed that using 10 cm between hills were significantly superior in boll weight (3.69 and 4.26) gm.boll-1, seed cotton yield (3.03 and 3.6) t.ha-1 and lint yield (1.13 and 1.30) t.ha-1 in both seasons 2010 and 2011 respectively. While, 30 cm spacing significantly superior in number of open bolls (12.10 and 13.6) bolls.plant-1 and ginning percentage (39.05 and 37.44)% in both seasons respectively. The nitrogen fertilizer 250 kg N ha-1 was significantly superior in dehiscence bolls number, seed cotton yield, lint yield and ginning percentage in both seasons 2010 and 2011 respectively. It can be concluded that 'using 10 cm spacing between holes with 250 kg N ha-1 to achieve highest seed cotton yield.  

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