Download or read book Estimation of Monthly Water Consumption by Selected Vegetable Crops in the Semi Arid and Humid Regions of Puerto Rico written by Megh Raj Goyal and published by . This book was released on 1989-10 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimation of Monthly Water Consumption by Selected Crops in Semi Arid and Humid Regions of Puerto Rico written by Megh R. Goyal and published by . This book was released on 1989-07-01 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paperbound Books in Print written by and published by . This book was released on 1992 with total page 1624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paperbound Books in Print 1995 written by Reed Reference Publishing and published by . This book was released on 1995-12 with total page 1542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subject Guide to Books in Print written by and published by . This book was released on 2001 with total page 3054 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accuracy of Data for Selected Categories Compiled in the Puerto Rico Water Use Information Program written by Wanda L. Molina-Rivera and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Predicting Crop Water Requirements written by J. Doorenbos and published by . This book was released on 1975 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculation of crop evapotranspiration; Selection of crop coeficient; Calculation of field irrigation requirements.

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1989 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1989 with total page 1684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accuracy of Data for Selected Categories Compiled in the Puerto Rico Water Use Information Program U S Geological Survey Fact Sheet FS 141 96 August 1997 written by and published by . This book was released on 1997* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Predicting Crop Water Requirements and Yield for Tomato Under a Humid Climate written by Naresh Kumar Arumugagounder Thangaraju and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Methodologies to predict crop water requirements in arid and semi-arid areas are well known. Humid areas pose a challenge, because irrigation is normally required only for short periods of a few weeks or months, during the peak of the summer growing season. The amount of irrigation water is also much less compared to the arid and semi-arid regions and is supplementary to rainfall. The objective of this study was to assess the usefulness of the AquaCrop (V 6.1) to estimate irrigation requirements for field grown tomato in a humid region of Eastern Canada. Input to the model was obtained from two years of field trials conducted at the Macdonald Farm of McGill University, Quebec, Canada. There were three irrigation treatments in 2017: 100%, 70 %, and 30 % of plant available water (AWC); and in 2019: 85 %, 60 % and 30 % of plant available water (AWC). The model was calibrated with the 2017 field results and validated with the 2019 field results. The calibrated and validated parameters were evapotranspiration, dry yield, total biomass and water productivity (kg of dry yield/m3 of water transpired). In the calibration phase, AquaCrop estimated dry yield and total biomass with a R2 of 0.94 and 0.86, respectively. For the validation phase, AquaCrop estimated dry yield and total biomass with a R2 of 0.84 and 0.96 respectively. The model overestimated biomass under water limiting conditions (30 % AWC) and underestimated the dry yield of tomato in general. There was no statistical difference in water productivity irrespective of the irrigation treatment. Overall, the model is suitable for predicting irrigation water requirement, crop yield, total biomass, and water productivity for tomato under humid climate. The validated AquaCrop model was then used to predict the irrigation water requirements and fruit yield for the once – in- 35-year dry year and the year of average growing season rainfall, for three different soil types (silty clay, sandy loam, heavy clay) under four irrigation regimes (90%, 75%, 65% and 50% of AWC). The irrigation water requirement for the once-in-35 dry year of 2001 under 90 % AWC was ~ 250 mm irrespective of the soil type and the observed water productivity was 2.32 Kg/m3. The year of average growing season rainfall (1993) with a total rainfall of 500 mm required ~ 165 mm under 90 % AWC with a water productivity of 2.38 Kg/m3. The sandy loam soil has the highest water productivity irrespective of the irrigation treatment for both the dry year of 2001 and the average year of 1993. Under water scarce conditions, 75 % AWC it could be used instead of 90 % AWC, with no significant decrease in crop yield and water productivity"--

Download or read book Chemical Data of Puerto Rico Soil written by J. A. Bonnet and published by . This book was released on 1941 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cactus Opuntia Spp as Forage written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Opuntias are multipurpose plants that are increasingly being used in agricultural systems in arid and semi-arid areas. Due to its high water-use efficiency, it is particularly useful as forage in times of drought and in areas where few other crops can grow, and it is now considered a key component for the productivity and sustainability of these regions. This publication presents current scientific and practical information on the use of the cactus Opuntia as forage for livestock.

Download or read book Water Quality for Agriculture written by R. S. Ayers and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Richtlijnen voor de werker in het veld om problemen te ondervangen ten aanzien van de waterkwaliteit voor irrigatie-doeleinden. Tenslotte worden praktijkervaringen uit diverse gebieden vermeld

Download or read book Ecological Regions of North America written by and published by . This book was released on 1997 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents a first attempt at holistically classifying and mapping ecological regions across all three countries of the North American continent. A common analytical methodology is used to examine North American ecology at multiple scales, from large continental ecosystems to subdivisions of these that correlate more detailed physical and biological settings with human activities on two levels of successively smaller units. The volume begins with an overview of North America from an ecological perspective, concepts of ecological regionalization. This is followed by descriptions of the 15 broad ecological regions, including information on physical and biological setting and human activities. The final section presents case studies in applications of the ecological characterization methodology to environmental issues. The appendix includes a list of common and scientific names of selected species characteristic of the ecological regions.