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Methods of growth control of horticultural crops. Physical method Chemical method Biological method Physical methods Pruning Shoot tip and some other branches are removed allow room for new growth, healthier plants. it increases the productivity and make plants more manageable. Pruning methods Heading back – Removal of the shoot apex eliminates the effect of auxins, … Read More “Growth control of horticultural crops” »
Organic farming is an agricultural system that provide fresh, tasty, authentic foods while respecting the natural life cycle systems. Codex Alimentarius guidelines. (food law) Organic farming is regulated internationally by Codex Alimentarius Guidelines This guidelines are established by The united nations Food and Agricultural Organization (FAO) World Health Organization (WHO) International Federation of the Organic … Read More “Organic farming” »
some important terminologies with related soil water. Saturation capacity – Soil is at its maximum retain capacity. Field capacity – A measure of the maximum amount of the water that soil can hold. Permanent wilting point – The minimum soil moisture at which a plant wilt and no longer recover its turgidity. Available water content … Read More “Soil water” »
Main considering chemical properties of soil are given below. Cation exchange capacity (CEC) pH Salinity C:N ratio (Carbon to Nitrogen) Soil colloids – Finest clay and SOM (Soli Organic Matters) particles. The location for most physical and chemical activity. Soil colloids have larger surface areas due to their small size. Colloids has many negative charge … Read More “Chemical properties of soil.” »
Mainly there are four experimental design models. Completely Randomized Design (CRD) Random Completely Block Design (RCBD) Split Plot Design Latin Square Design (LSD) Completely Randomized Design (CRD) Experimental unit in the population has an equal equally treated with the treatments/randomly treated. E.g. – Effect of the fertilizer is monitored of crop cultivation, plants (Experimental unit) … Read More “Experimental Design Models” »
Most commonly used statistical sampling methods are shown below. Random sampling Stratified sampling Cluster sampling Systematic sampling Random sampling Each member in the population has equal chance to being selected. This can be used when the population is homogeneous. E.g. – Select the plant leaves randomly for the measure the photosynthetic rate E.g – Plant … Read More “Statistical Sampling Methods.” »
Categories Terrestrial – Bamboo Orchid Epiphytic Lithophytic Subterranean Horticultural classification Phalaenopsis type – Petals are broad and overlap on each other Cane type – Petals are thin and sometimes twisted Intermediate type – intermediate in size and shape between Phalaenopsis and cane type Orchid Hybridization Ascocenda (Ascocentrum x Vanda) The structure of Orchids, conform to … Read More “Cultivation of Orchids” »
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Soil definition: Naturally weathered part of the earth, including organic matters affect on plant growth and plant performances. Soil genesis Soil is generated from the mother rocks and further developed from the natural and anthropogenic activities. Five major factors influencing soil formation Type of rock Climate Topography Organisms Time Soil formation comprises of two different … Read More “Soil” »
Hydroponics is a technique used for growing plants in nutrient solutions with or without an artificial medium A major problems in growing crops in soil Presence of disease causing organisms Unsuitable soil reactions Compaction of soil Poor drainage Soil erosion Continuous cultivation cause soil infertility Advantages of Hydroponic cultivation Maximum crop yield Crop production where … Read More “Hydroponics” »
