The Effects on Soil Temperature and Moisture Content and Crop Growth and Yield of Intercropping Maize with Melon (Colocynthis vulgaris)

1988 ◽  
Vol 24 (1) ◽  
pp. 67-74 ◽  
Author(s):  
F. O. Olasantan
Keyword(s):  
Moisture Content ◽  
Soil Temperature ◽  
Field Trials ◽  
Crop Growth ◽  
Growth And Yield ◽  
Land Equivalent Ratio ◽  
Sole Cropping ◽  
Colocynthis Vulgaris ◽  
Seed Yields ◽  
Soil Temperature And Moisture

SUMMARYThe effects of various intercropping patterns of maize and melon on soil temperature and moisture content and crop growth and yield were compared in field trials over a two year period. Intercropping raised soil temperature in the upper 10 cm at 0600 h and reduced it at 1000, 1400 and 1800 h, and also increased soil moisture content by about 30%, compared with maize sole cropping. Melon biomass and seed yields were reduced by intercropping but maize growth characters were unaffected. However, the reduction in melon yields was less when grown with maize in widely spaced rows. Maize intercropped with melon in alternate pairs of rows (2:2) gave the best land equivalent ratio (LER).

Growth, development and yield of pigeon pea (Cajanus cajan (L.) Millsp.) in the lowland tropics:2. Effect of reduced assimilatory capacity

1982 ◽  
Vol 98 (1) ◽  
pp. 71-77 ◽  
Author(s):  
T. O. Tayo
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Pigeon Pea ◽  
Field Trials ◽  
Growth And Yield ◽  
Vegetative Stage ◽  
Dry Matter Accumulation ◽  
Filling Stage ◽  
Growth Development ◽  
Seed Yields

SUMMARYIn two field trials in 1980, 33, 67 or 100% of the leaves on pigeon pea (cv. Cita-1) plants were removed either at the vegetative stage, the onset of flowering, or at the rapid pod-filling stage, in order to evaluate the effect of reduced assimilatory capacity on the growth and yield characteristics of the crop.Reduction in the assimilatory capacity of the plant led to significant reduction in the vegetative growth, dry-matter accumulation and seed yield of the defoliated plants compared with the undefoliated control such that 33, 67 or 100% defoliation led to 15–55, 40–60 and 75–80% reduction in seed yield respectively, at both trials. Also, defoliation was more damaging to crop performance if carried out from the onset of flowering than at the vegetative stage. Thus, the seed yields of plants defoliated at the onset of flowering and the rapid pod-filling stage were 30–80 and 40–45 % lower than the yield from plants defoliated at the vegetative stage in both trials.

STUDIES ON RHIZOCTONIA SOLANI KÜHN.: IV. EFFECT OF SOIL TEMPERATURE AND MOISTURE ON VIRULENCE

1938 ◽  
Vol 16c (5) ◽  
pp. 203-213 ◽  
Author(s):  
G. B. Sanford
Keyword(s):  
Growth Rate ◽  
Soil Moisture ◽  
Moisture Content ◽  
Soil Temperature ◽  
Growth Rates ◽  
Nutrient Medium ◽  
Soil Moisture Content ◽  
Soil Temperatures ◽  
Dry Soil ◽  
Soil Temperature And Moisture

The effects of soil temperatures between 16° and 25 °C., and of soil moisture content between 19 and 40% of the moisture-holding capacity, on the virulence and type of attack of Rhizodonia Solani on young potato sprouts, were studied under controlled conditions and the results from 13 separate tests are discussed. The comparative growth rates of the pathogen on nutrient agar and in soil are outlined.At 25 °C. the disease diminished very abruptly. Between 23° and 16 °C., the pathogen appeared equally virulent throughout the range of soil moisture mentioned. The fluctuations which occurred in separate tests were not definite or consistent enough to warrant a conclusion that the virulence is greater at 16° than at 23°, or that a dry soil is more or less favorable to it than a wet one.In a fertile, steam sterilized loam, at medium moisture content, it required about ten days for the pathogen to grow as far as it did on the surface of a nutrient medium in four days. The growth rate at either 23° or 16 °C. was slightly higher in a wet soil than in one of medium moisture content, but in a dry soil the rate was somewhat less at 23° than at 16° in a medium or wet soil. Even in a fairly dry soil (19% moisture-holding capacity) at 16° the growth of the pathogen covered a distance of 5 cm. in ten days, which would appear adequate for infection of young sprouts from a set bearing viable sclerotia.The effort of the host to recover, by means of secondary and tertiary sprouts from the attacked primary sprout, was better in a wet soil than in a dry one at both 16° and 23 °C. The best effort was in a wet soil at 23°. A distinction is made between the effects of soil moisture and temperature in stimulating growth of the host, and their effect on parasitism itself.The remarkable tendency of the secondary sprouts to escape infection, regardless of soil temperature and soil moisture, is indicated. There was evidence that certain factors other than soil temperature and moisture may play an important role in the parasitism of R. Solani.

scholarly journals Causal Research on Soil Temperature and Moisture Content at Different Depths

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 39077-39088
Author(s):  
Zhihao Cao ◽  
Shaomin Mu ◽  
Li Xu ◽  
Mingfeng Shao ◽  
Hongchun Qu
Keyword(s):  
Moisture Content ◽  
Soil Temperature ◽  
Different Depths ◽  
Soil Temperature And Moisture

SHORT COMMUNICATION: Influence of soil temperature and moisture on water-soluble phenolic compounds in manured soil

1994 ◽  
Vol 74 (1) ◽  
pp. 111-114 ◽  
Author(s):  
J. W. Paul ◽  
J. A. Covert ◽  
E. G. Beauchamp
Keyword(s):  
Soil Moisture ◽  
Phenolic Compounds ◽  
Moisture Content ◽  
Soil Temperature ◽  
Soil Moisture Content ◽  
Short Communication ◽  
Animal Manure ◽  
Water Soluble ◽  
Key Words Animal ◽  
Soil Temperature And Moisture

Water-soluble phenolic compounds were measured in fresh and decomposed animal manures. Following manure addition to soil, less than 50% of the water-soluble phenolic compounds were recovered within 1 h. The concentration of phenolic compounds decreased more slowly with decreasing temperatures to 4 °C and increasing soil moisture content during a 14-d incubation. The results suggest that water-soluble phenolic compounds were both adsorbed onto soil particles and decomposed by microorganisms. Key words: Animal manure, phenolic compounds, compost

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