The Relationship Between Sunshine, Rainfall and Crop Yields at Serere Research Station

1966 ◽  
Vol 31 (4) ◽  
pp. 439-440
Author(s):  
D. Jowett ◽  
P. O. Eriaku
Keyword(s):  
Crop Yields ◽  
Research Station ◽  
The Relationship

scholarly journals Influence of Gully Land Consolidation on Phreatic Water Transformation in the Loess Hilly and Gully Region

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 538
Author(s):  
Zihao Guo ◽  
Jianen Gao ◽  
Pengcheng Sun ◽  
Shaohui Dou ◽  
Juan Li ◽  
...  
Keyword(s):  
Crop Yields ◽  
Field Application ◽  
Land Consolidation ◽  
Transformation Rate ◽  
Soil Thickness ◽  
Phreatic Water ◽  
Artificial Rainfall ◽  
Outflow Rate ◽  
Water Outflow ◽  
The Relationship

Gully Land Consolidation (GLC) is a proven method to create farmlands and increase crop yields in the Loess Hilly and Gully Region, China. However, GLC influences phreatic water transformation and might cause the farmlands water disasters, such as salinization and swamping. For exploring the influence of GLC on phreatic water transformation and mitigating disasters, a series of indoor experiments were conducted in the artificial rainfall hall. Then, we simulated the phreatic water transformation patterns under more conditions with HYDRUS-3D. Finally, an engineering demonstration in the field was performed to validate our research. The indoor experiments indicated that GLC could increase phreatic water outflow rate 4.39 times and phreatic water coefficient (PWC) 2.86 times with a considerable delay. After calibration and validation with experimental data, the HYDRUS-3D was used to simulate phreatic water transformation under more soil thickness and rainfall intensities. Accordingly, we summarized the relationship among PWC, rainfall intensities, and soil thickness, and therefore suggested a blind ditch system to alleviate farmlands disasters. Field application showed that a blind ditch system could avoid disasters with 3.2 times the phreatic water transformation rate compared to loess. Our research provides implications for sustainable land uses and management in the region with thick soil covers.

scholarly journals Effect of Three Ca Sources Applied On Peanuts I. Productivity and Seed Quality1

1980 ◽  
Vol 7 (1) ◽  
pp. 19-25 ◽  
Author(s):  
D. L. Hallock ◽  
A. H. Allison
Keyword(s):  
Crop Yields ◽  
Relative Effectiveness ◽  
Correlation Coefficients ◽  
Early Flowering ◽  
Lower Yield ◽  
Flowering Stage ◽  
Arachis Hypogaea L ◽  
Dry Conditions ◽  
Increase Productivity ◽  
The Relationship

Abstract The relative effectiveness of United States Gypsum granular 420 Landplaster Bulk (420-Bulk) and Texasgulf Gypsum (Tg Gypsum) were compared with finely ground anhydrite (Bagged-LP) as sources of supplemental Ca for Florigiant peanuts (Arachis hypogaea L.). Treatments included the above sources at rates of 605 kg/ha banded (61 cm) or 907 kg/ha broadcast (91-cm wide rows) of CaSO4 equivalent per unit area covered (double these rates of 420-Bulk and Bagged-LP also were applied in 1977). Times of application were planting, planting + ca 30 days, and early flowering stage. The experiments were located on Kenansville lfs (Arenic Hapludult) in 1977 and on Rumford lfs (Typic Hapludult) in 1978. The Ca treatments increased crop yields from 360 to 1,200 kg/ha and crop value (yield × price) from $343 to $889/ha over the check in 1977. Slightly lower yield increases were obtained in 1978 when dry conditions prevailed during fruit maturation. Kernel size grades were improved markedly by all Ca treatments in 1977. There was a definite trend both years (significant in 1978) toward higher productivity when the Ca sources were applied at the early flowering stage compared to earlier applications. No difference was noted between methods of application of Bagged-LP or Tg Gypsum in 1978. Double rates of Bagged-LP or 420-Bulk in 1977 did not increase productivity over the low rates. A single application of Bagged-LP was as effective as split applications in the 1978 test. Germinability of seed in 1977 averaged 85% or higher for all Ca treatments. Seed germination in 1978 averaged 75%, 69% and 74% in plots where Tg Gypsum, 420-Bulk or Bagged-LP was applied, respectively. Germination was lowest in the check plots both years. Germinability and seed-Ca contents were significantly higher in 1978 when the Ca sources were applied at the early flowering stage (ca July 1) than 15 days earlier. Seed-Ca contents both years and K contents in 1978 were significantly correlated with germinability. The correlation coefficients were only 0.4 in each case and the relationship was negative for K. In general, 420-Bulk, Tg Gypsum, or Bagged-LP were equally effective sources of supplemental Ca for peanuts. However, when fruit mature under very dry conditions 420-Bulk may be somewhat inferior to the other Ca sources especially when applied before early flowering.

scholarly journals Agroecological Determinants of Potato Spatiotemporal Yield Variation at the Landscape Level in the Central and Northern Ukraine

2021 ◽  
Vol 4 (2) ◽  
pp. 34-47
Author(s):  
Anastasiia Zymaroieva ◽  
Tetiana Fedoniuk ◽  
Svitlana Matkovska ◽  
Olena Andreieva ◽  
Victor Pazych
Keyword(s):  
Crop Yields ◽  
Climatic Factors ◽  
High Sensitivity ◽  
Potato Yield ◽  
Limiting Factors ◽  
Forest Steppe ◽  
Yield Parameters ◽  
Bioclimatic Variables ◽  
Potato Yields ◽  
The Relationship

Global food security largely depends on the crop yield increase, so the study of the yield-limiting factors of potato (the second bread) is a pressing issue today. This study determines the contribution of the agroecological factors, namely, bioclimatic variables, soil indicators, and factors of landscape diversity, to the variation in potato yields. Conducted in Polissya and Forest-steppe zones of Ukraine during 1991–2017, this study has not only addressed the relationship between ecological determinants and potato yields, but also considered crop yields as a dynamic system. The dynamics of potato yields from the mid-1990s to the present is described by a log-logistic model. There are statistically significant regression dependencies between potato yield parameters and agroecological factors. Potato yield is dependent on the diversity of landscape cover. The relationship between yield parameters and landscape-ecological diversity is non-linear, which determines the presence of optimal landscape structure for the highest potato yields. Among climatic factors, the continental climate is of the greatest importance for potato yield. The high sensitivity of potato yield parameters to soil indices was found, and mostly the soil texture components (silt content), which largely determines the potato yield spatial variation.

The reclamation of land covered with pulverized fuel ash. The influence of soil depth on crop performance

1963 ◽  
Vol 61 (3) ◽  
pp. 299-308 ◽  
Author(s):  
D. R. Hodgson ◽  
R. Holliday ◽  
F. Cope
Keyword(s):  
Crop Yield ◽  
Crop Yields ◽  
Soil Depth ◽  
Land Restoration ◽  
Response Curves ◽  
Fertilizer Response ◽  
Fuel Ash ◽  
Pulverized Fuel ◽  
Pulverized Fuel Ash ◽  
The Relationship

1. A review of land restoration problems in relation to the soil depth required for successful crops showed that factual information on this orthodox method of restoration was inadequate.2. A field trial sited on pulverized fuel ash is described in which the relationship between crop yield and soil depth at a range of fertilizer levels was determined; kale, oats, rape, barley and potatoes were the test crops.3. The crops were divided into two groups, sensitive (kale and barley) and tolerant (oats, rape, potatoes) to ash toxicity, on the basis of their response to soil depth at the high fertilizer level. Quadratic expressions relating yield to soil depth, over the range 3–36 in. at each fertilizer level were fitted to the data for each crop group.4. Yield isoquants, derived from the fertilizer response curves at each soil depth, enabled soil depth-fertilizer level combinations to be ascertained for producing a given level of crop yield. Fertilizer could be substituted for soil more effectively for tolerant than sensitive crops.5. A 12 in. cover of soil together with 1½ times the normal farm fertilizer dressing for the crop was the minimum for acceptable yields. Fertilizer use may have to be increased to twice normal dressings to maintain yields if soil depths are reduced to below 12 in.6. Crop yields were not increased by a soil covering greater than 24 in. deep.

scholarly journals Influence of Soybean Monoculture on Phialophora gregata f. sp. sojae IGS-Genotype B Isolate Aggressiveness

Plant Disease ◽  
2010 ◽  
Vol 94 (1) ◽  
pp. 69-74 ◽  
Author(s):  
T. J. Hughes ◽  
C. R. Grau
Keyword(s):  
Symptom Severity ◽  
Plant Introduction ◽  
Research Station ◽  
Resistant Plant ◽  
Brown Stem Rot ◽  
Phialophora Gregata ◽  
Foliar Symptoms ◽  
Resistant Accession ◽  
The Relationship ◽  
Genotype A

Many soybean accessions described as resistant to brown stem rot (BSR) are preferentially colonized by isolates of Phialophora gregata f. sp. sojae genotype B. These isolates are generally considered less aggressive than isolates of P. gregata f. sp. sojae genotype A because they cause minor or no foliar symptoms characteristic of BSR. However, variation in aggressiveness has been observed among isolates of P. gregata f. sp. sojae genotype B. To determine if BSR-resistant soybean accessions would preferentially select for more aggressive isolates of P. gregata f. sp. sojae genotype B, monocultures of both BSR-resistant or BSR-susceptible accessions were established at the Arlington Agriculture Research Station, Arlington, WI. BSR-susceptible cv. Corsoy 79 and BSR-resistant plant introduction (PI) 567.157A were inoculated under greenhouse conditions with a total of 39 isolates of P. gregata f. sp. sojae genotype B obtained from the different monocultures. BSR severity was determined as the percentage of symptomatic foliar and internal stem tissue. Overall, BSR severity was low and did not exceed 20% for either foliar or stem symptoms. Isolates of P. gregata f. sp. sojae genotype B caused more severe foliar (P < 0.0001) and stem (P = 0.0008) symptoms of BSR on PI 567.157A than on Corsoy 79. Analysis of BSR stem symptom severity indicated an interaction (P = 0.0124) between soybean accession and the origin of isolates of P. gregata f. sp. sojae genotype B. Isolates of P. gregata f. sp. sojae genotype B obtained from the monoculture of a BSR-susceptible or -resistant accession were more aggressive than isolates from a mixed resistant and susceptible soybean monoculture. The relationship between the origin of isolate of P. gregata f. sp. sojae genotype B and isolate aggressiveness was more apparent for PI 567.157A than for Corsoy 79. Results of this study indicate that the monoculture of resistant or susceptible soybean favors an increase in the aggressiveness of isolates of P. gregata f. sp. sojae genotype B. Furthermore, results suggest that resistance to genotype A may be genetically different from resistance to genotype B.

scholarly journals Efficiency of nano preparations in soybean growing technology

2020 ◽  
Vol 11 (3) ◽  
pp. 7-21
Author(s):  
S. M. Kalenska ◽  
◽  
N. V. Novytska ◽  
Keyword(s):  
Seed Treatment ◽  
Crop Yields ◽  
Leaf Surface ◽  
Agricultural Practices ◽  
Field Research ◽  
Mineral Fertilizers ◽  
Research Station ◽  
Leaf Surface Area ◽  
Soybean Plants ◽  
Sowing Seed

Nanotechnology is seen as one of the key technologies in the twenty-first century, which promises to improve traditional agricultural practices and offer sustainable development by improving management and conservation tactics by reducing agricultural resources costs. The creation and implementation of new environmentally friendly and technological nano preparation designed to increase the efficiency of plant nutrient use from mineral fertilizers and soil - is one of the ways to increase crop yields and the quality of agricultural products. The aim of the research was to determine the effect of pre-sowing seed treatment and fertilizing of sowings by nano preparation Avatar (micro fertilizer of carboxylates of natural acids), Iodis-concentrate (immunomodulator – a stimulator of growth processes), and Super Micro Plus (nanochelate fertilizer), and leaf apparatus formation of soybean Khorol variety. Field research was conducted in 2016–2020 in a stationary experiment at the NULES of Ukraine «Agronomic Research Station» in 10-field crop rotation and also in laboratory «Demonstration collection field of crops» of the Plant Science Department. As a result of the conducted researches, was established that the use of nano preparation Avatar, Iodis-concentrate, and Super Micro Plus for seed treatment and fertilizing intensified leaf surface formation and symbiotic apparatus activity of soybean plants. The obtained results confirm that the application of the complex of nano fertilizers Jodis-concentrate, Avatar, and nano-chelate fertilizer Super Micro Plus in the soybean fertilization helped to increase the yield, which indicates their unconditional effectiveness. The highest efficiency of nano fertilizers was shown by inoculation and seed treatment by Avatar with co-fertilizing Avatar +nano-chelate fertilizer Super Micro Plus, providing formation of 52.4 thousand m2/ha of leaf surface area of soybean variety Khorol, 69.7 pcs/plant tubers on the root system, 785 mg/plant of their weight and yield at the level of 2.79 t/ha.

scholarly journals Effects of two decades of organic and mineral fertilization of arable crops on earthworms and standardized litter decomposition

2018 ◽  
Vol 69 (1) ◽  
pp. 17-28
Author(s):  
Heide Spiegel ◽  
Teresa Mosleitner ◽  
Taru Sandén ◽  
Johann G. Zaller
Keyword(s):  
Litter Decomposition ◽  
Crop Yields ◽  
Soil Biota ◽  
Growth And Yield ◽  
Research Station ◽  
Mineral Fertilization ◽  
Organic Mineral ◽  
Compost Application ◽  
Earthworm Activity

Summary Organic fertilization has been shown to benefit soil biota. A field experiment was established in 1991 at the AGES experimental research station Ritzlhof to investigate the effects of long-term fertilization on soil biota and crop yields. Experimental plots were cultivated using a crop rotation with maize, wheat, barley, and pea. Eight treatments consisted of compost application (urban organic waste, green waste, cattle manure, and sewage sludge compost). Composts were applied exclusively (organic) or amended with mineral nitrogen (N) fertilizers (80 kg N ha−1, organic-mineral) and compared to 0 (control) and mineral (40, 80, and 120 kg N ha−1) fertilization. Earthworm activity and biomass, litter decomposition, crop growth, and yield parameters were investigated under winter barley (Hordeum vulgare L.) in 2014 after uniform mineral fertilization and 1.5 years after the last compost application. Earthworm activity was significantly increased under long-term organic-mineral fertilization compared to the control, whereas earthworm biomass was unaffected by compost application. Litter decomposition rate was highest in the control. Only barley stem growth was affected by fertilization, whereas other barley parameters including yield were unaffected. The results showed that long-term fertilization affects soil biota even if compost is not applied every year.

scholarly journals Agroforestry practices and food security in the mount Bamboutos landscape, Western Highlands of Cameroon

2021 ◽  
Vol 11 (1) ◽  
pp. 203-211
Author(s):  
Njukeng Jetro Nkengafac ◽  
Louis Nkembi ◽  
Ngulefack Ernest Forghab ◽  
Asabaimbi Deh Nji
Keyword(s):  
Food Security ◽  
Crop Yields ◽  
Sampling Technique ◽  
Household Food Security ◽  
Extension Agents ◽  
Fuel Wood ◽  
Agroforestry Adoption ◽  
The Relationship ◽  
Compost Manure ◽  
Agroforestry Practices

This study presents agroforestry practices by farmers in Mount Bamboutos, why they adopt agroforestry practices and main constraints towards adoption as well as the relationship between agroforestry practices and household food security. A purposive sampling technique was used to administer 195 questionnaires. Data collected were analyzed using both descriptive and inferential statistics. The demographic information analyzed showed that the majority of respondents were males (76%) and all were literate with a majority using fuel wood as their main source of energy. The major agroforestry practices were, planting of fodder, fertilizer, fruit and timber trees, compost manure and farm yard manure preparation. The highest year of adoption of agroforestry practices was in 2019. Most (50%) of the respondents adopted agroforestry practices for better crop yields. However, the main constraints to agroforestry adoption were lack of training, lack of seeds and much labour involved. Lack of training was the greatest constraint cited by respondents. 39% of the respondents were food secure and apart from compost manure practice that was negatively associated with food security, all the other agroforestry practices were positively associated with food security. Based on findings of this study, it is recommended that extension agents and other stakeholders should intensify efforts to educate and train more farmers on the practice and advantages of agroforestry. This will go a long way to increase adoption rate while ensuring food security.

scholarly journals Integrated Nitrogen Management in Growth and Yield of Chilli (Capsicum annum L.) Under Red and Lateritic Soils of Odisha

2020 ◽  
pp. 28-34
Author(s):  
Subhashree Behera ◽  
Poonam Preeti Pradhan ◽  
Gayatri Sahu ◽  
Gour Hari Santra
Keyword(s):  
Plant Growth ◽  
Crop Yields ◽  
Block Design ◽  
Nitrogen Management ◽  
Growth And Yield ◽  
Research Station ◽  
Lateritic Soils ◽  
Randomized Block Design ◽  
Stover Yield ◽  
Integrated Nitrogen Management

The present study was conducted in research plots of Central Horticultural Research station (CHES) during Rabi season 2018-2019 on Integrated Nitrogen management in chilli under lateritic soils of Odisha. The field experiment was laid out in Randomized Block Design comprising of eight treatments replicated thrice. It was observed that the substitution of N through vermicompost to the extent of 50% and remaining 50% as urea proved to be considered as the best treatment amongst different combinations of organic sources with urea (RDF). The highest yield of chilli i.e. both pod yield (14511.4 kg ha-1) and stover yield (901.05 kg ha-1) and plant growth such as plant height, flowering, fruiting, fruit length, fruit girth was observed in T5 due to combination of 50% of N as urea and 50% of N as VC. Integrated use of organic manures along with chemical fertilizers not only produced highest and sustainable crop yields but also enhanced plant growth due to quick mineralization and easy availability.

Sign in / Sign up

Export Citation Format

Share Document