The influence of various soil moisture-régimes on the yield and quality of cotton in an arid zone

1969 ◽  
Vol 73 (3) ◽  
pp. 425-429 ◽  
Author(s):  
J. Amir ◽  
H. Bielorai
Keyword(s):  
Arid Zone ◽  
Moisture Stress ◽  
Clear Water ◽  
Stress Symptoms ◽  
Yield And Quality ◽  
Moisture Regimes ◽  
Boll Weight ◽  
Beginning Of Flowering ◽  
The One

SummaryThe results of three cotton irrigation experiments in the western Negev region indicate that by increasing the intervals between irrigations and by applying the first irrigation at the beginning of flowering, maximum yields of 1700–2100 kg/ha can be obtained with three irrigations. In all treatments except the one with four irrigations, about 0·31 kg of lint was produced for each 1 m3 of irrigation water. In the three driest treatments, where cotton suffered from moisture stress during various periods of growth, no differences in lint quality could be detected in comparison with wetter treatments. As long as there were clear drought symptoms, such as in the three driest treatments, additional irrigation increased the number of bolls/plant, while the average boll weight remained unaffected. Additional irrigation in treatments where there were no clear water stress symptoms did not increase the number of bolls/plant, but increased the average boll weight.

scholarly journals Improvement of the cucumber protection system in the greenhouse for production environmentally safe products

2020 ◽  
pp. 15-20
Author(s):  
Svetlana Aleksandrovna Dudnikova ◽  
Valentina Vasilievna Lapina ◽  
Nikolay Vasilievich Smolin ◽  
Dmitry Vladimirovich Bochkarev
Keyword(s):  
Biologically Active ◽  
Net Income ◽  
Biological Products ◽  
Yield And Quality ◽  
Combined Use ◽  
Environmentally Safe ◽  
Beginning Of Flowering ◽  
Growth Development ◽  
Active Substances

Production of environmentally friendly cucumber products is one of the important problems of modern vegetable growing. In the current situation, many issues of cucumber technology using the low-volume technology method require adjustment and further improvement. The purpose of the research was to study and assess the effect of combinations of zircon with biofertilizers against the background of the use of biological products on the growth, development, yield and quality of cucumber. The complex treatment of cucumber plants of the F1 Atlet hybrid with biologically active substances (BAS) contributed to an increase in biometric indicators in comparison with the control throughout the entire crop rotation. The period from germination to the beginning of flowering and fruiting decreased, the plant height increased by 7.2–13.2% and the stem diameter by 12.5–17.5%. The yield was significantly influenced by the growth of the leaf area of cucumber plants, which increased in variants with experimental technologies by 5.9–34%. Under the influence of the studied factors, the yield of standard cucumber production increased by 8.0–27.6%. The mass fraction of fruits that do not meet the requirements of the standard was 6.6–8.1%. On the control variant, the output of non-standard products increased to 10%. The highest net income and level of profitability were obtained with the combined use of Zircon with Ecofus, both against the background of the use of biological products (659.3 rubles / m2 or 38.4%) and without them (685.13 rubles / m2 or 40.1%).

Quality and yield in St. John's wort (Hypericum perforatum L.) harvested in different phenological stages

2002 ◽  
Vol 50 (3) ◽  
pp. 349-358 ◽  
Author(s):  
F. Hevia ◽  
M. Berti ◽  
R. Wilckens
Keyword(s):  
Hypericum Perforatum ◽  
Block Design ◽  
Flower Bud ◽  
Phenological Stages ◽  
St John’S Wort ◽  
St John's Wort ◽  
Yield And Quality ◽  
Hypericum Perforatum L ◽  
Beginning Of Flowering

Two experiments were conducted in the province of Ñuble, Chile during the 1997/98 and 1998/99 seasons with the objective of evaluating the effect of harvesting date on the yield and quality of St. John's wort (Hypericum perforatum L.) in the second year of production. The apical 25 cm of the stem were harvested in the following stages: flower bud, beginning of flowering, full flower and petal drop. A randomized complete block design with four replications was used. The best yield (fresh, dry and threshing weight) and the highest hypericin content were obtained at the petal drop stage. Nevertheless, the results indicate that the best time to harvest St. John's wort is when 10 to 20% of the flowers are open and the rest are in the bud stage.

scholarly journals YIELD AND QUALITY OF ONION VARIETIES TO THREE SOIL MOISTURE REGIMES IN LYSIMETERS AND FIELD CONDITIONS IN NIGER, WEST AFRICA.

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 587a-587
Author(s):  
CHIT RK PRASHAR ◽  
GOVIND C. SHARMA
Keyword(s):  
Soil Moisture ◽  
Sandy Loam ◽  
Soil Depth ◽  
Field Conditions ◽  
Medium Size ◽  
The Past ◽  
Yield And Quality ◽  
Moisture Regimes ◽  
The Mean

Yield and quality responses to Galmi Violet, Galmi White and Sumrana Violet were studied during 1990-91 and 1991-92 in Maradi region in Niger. Three regimes comprised of irrigating when the soil moisture depletion in 20 cm of soil depth was 40%, 60% and 80%. Investigations were carried out both under field conditions and in the lysimeters. The soil was sandy loam to loam. The lysimeters were 2m×2m×1m drainage type and well set over the past twenty years. The crop was raised during the dry season from October to March with no rainfall. Despite the low temperatures the radiation levels were high. Onion yield was higher under low irrigation regime. The mean yield was 32.5 tons/ha. However, the bulk density was higher under higher moisture regimes. The keeping quality over eight month period was not affected by soil moisture regimes. The bulbs of Sumrana Violet were of medium size whereas the bulbs of Galmi Violet and White were larger size. From a market acceptability standpoint violet onions were preferred over the white ones.

EFFETS DE LA FERTILISATION ET DES REGIMES HYDRIQUES SUR LE RENDEMENT, L’UTILISATION D’EAU ET LA COMPOSITION CHIMIQUE DE LA LUZERNE ET DU TREFLE LADINO

1976 ◽  
Vol 56 (2) ◽  
pp. 293-302 ◽  
Author(s):  
A. R. PESANT ◽  
J. L. DIONNE
Keyword(s):  
Soil Moisture ◽  
Crude Protein ◽  
Moisture Stress ◽  
Composition Chimique ◽  
Consumptive Use ◽  
Greenhouse Study ◽  
Moisture Regimes ◽  
Use Efficiency ◽  
Dry Water

Four fertility levels and four different soil moisture regimes were combined factorially to evaluate, in a greenhouse study, the yield, the consumptive use of water and the quality of alfalfa and ladino clover grown on St-Jude sand and on Ste-Rosalie clay. Usually, alfalfa yielded twice the amount of dry matter and had more difficulty in tolerating frequent irrigations. Ladino clover transpired less and, consequently, the number of irrigations was reduced. With the increase of yield and the decrease in water consumption, fertilization increased water use efficiency (WUE). The WUE for alfalfa (0.326 g of DM/cm of water) was greater than for clover (0.271 g/cm). In general, the crude protein and the digestibility were higher for clover than for alfalfa. Crude protein level and digestibility increased with soil moisture stress and decreased with the increase in soil fertility. The soil type influenced protein content but not digestibility. Finally, alfalfa absorbed a higher level of phosphorus than clover and mobilized this element at greater tensions. Phosphorus content of the legumes was decreased proportionally with dry water regimes, while potassium content was increased.

Effect of soil moisture regime, nitrogen and modified urea materials on yield and quality of geranium (Pelargonium graveolens) grown on alfisols

1999 ◽  
Vol 133 (2) ◽  
pp. 203-207 ◽  
Author(s):  
M. SINGH
Keyword(s):  
Soil Moisture ◽  
Field Experiments ◽  
Oil Yield ◽  
Moisture Regime ◽  
Nitrogen Application ◽  
Yield And Quality ◽  
Soil Moisture Regime ◽  
Moisture Regimes ◽  
Modified Urea

Two field experiments were conducted during 1996–98 at Bangalore, India to study the effect of soil moisture regimes (0·3, 0·6 and 0·9 IW:CPE ratios) irrigation water:cumulative pan evaporation (IW:CPE) ratios and three rates of nitrogen application (0, 100 and 200 kg/ha) and in another experiment, three soil moisture regimes (0·3, 0·6 and 0·9 IW: CPE ratios), two rates of nitrogen application (100 and 200 kg/ha) and modified urea materials [prilled urea (PU) and dicyandiamide coated urea (DCDCU)] on oil content, herbage, oil yield and quality of geranium grown on altisols. Soil moisture maintained at 0·6 IW:CPE ratio significantly increased the herbage and oil yields of geranium. Application of 200 kg N/ha gave the maximum herbage and oil yield compared with those obtained from 0 and 100 kg N/ha. DCDCU produced higher yield than PU. The concentration and quality of essential oil were not influenced either by soil-moisture regime, rates or carriers of N.

Effects of irrigation moisture regimes on yield and quality of paprika (Capsicum annuum L)

2010 ◽  
Vol 35 (13-14) ◽  
pp. 717-722 ◽  
Author(s):  
Victor D. Shongwe ◽  
Bekani N. Magongo ◽  
Michael T. Masarirambi ◽  
Absalom M. Manyatsi
Keyword(s):  
Capsicum Annuum ◽  
Capsicum Annuum L ◽  
Yield And Quality ◽  
Moisture Regimes

scholarly journals Evaluation of Hararge coffee (Coffea arabica L.) landraces for moisture stress tolerance

2021 ◽  
pp. 28-31
Author(s):  
Abdi Adem
Keyword(s):  
Stress Tolerance ◽  
Agricultural Research ◽  
Growth Yield ◽  
Moisture Stress ◽  
Eastern Ethiopia ◽  
Yield And Quality ◽  
Highly Sensitive ◽  
Augmented Design ◽  
Coffea Arabica L

Arabica Coffee is an important export commodity for Ethiopia, contributing 25 to 30 % of the country’s total foreign exchange earnings. Moisture stress is one of the major constraints of coffee production in Hararge, Eastern Ethiopia. Moisture stress affects the growth, yield and quality of coffee. Local coffee landraces are source of desirable traits including moisture stress tolerance. Accordingly, this study was conducted to evaluate Hararge coffee landraces for moisture stress tolerance. Treatments consisted of 200 coffee landraces (178 from seven districts of east Hararge Zone and 22 from two districts of west Hararge Zone). The coffee landraces were field planted in July 2005 at Mechara Agricultural Research Center using augmented design with six trees per plot or accessions. Moisture stress tolerance was recorded from three randomly selected coffee trees per plot, three times a day (in the morning, noon and night) from January 05 to 25, 2014.  The stress tolerance was determined using 1-5 scale by visual scoring (1- all leaves green and turgid, 2- most leaves still turgid but younger leaves show leaf folding; 3- all leaves wilt or fold, 4- Leaves partially turning pales, and partly shed showing severe wilting and 5-leaves completely turning brown and dry, mostly dropping). The collected data were analyzed using descriptive statistics. The result of this study revealed that the coffee landraces varied in their level of tolerance to moisture stress. The 200 coffee landraces were grouped into seven clusters based on their level of tolerance to moisture stress. Nine coffee landraces (4.5%) were highly tolerant to moisture stress, 25 (12.5%) were tolerant, and 36 (18%) were moderately tolerant.  On the other hand, 60 coffee landraces (30%) were less tolerant; while 57 (28.5%), 11(5.5%) and 2 (1%) were moderately sensitive, sensitive and highly sensitive to moisture stress, in that order.  There was variation in coffee landraces for moisture stress tolerance both between and within areas of the collection. Hence, it is advisable to maintain and use promising coffee landraces in coffee breeding. Screening of the landraces under controlled conditions like green house and studying of mechanisms of moisture stress is also the way forward.  

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