What are the reasons due to which growing crops are damaged
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Answer:
Crop damage from pathogens and pests is a worldwide problem. Agriculture crop productivity has been severely affected by various pests. The excessive use of chemicals in agriculture has led to a multitude of effects, including increased residues in plants, insect resistance, and contamination of soil, water, and air.
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Answer:
Adverse Climatic Conditions
Adverse climatic conditions will most probably top the list of the causes of crop failure. Adverse weather conditions include conditions that are too harsh for crops to survive, including extremely cold or extremely hot temperatures. These adverse weather conditions cause the crops to either dry up due to the scorching sun or fail to grow due to extremely cold conditions.
Unpredictable Weather Conditions
In the recent past, the climatic and weather conditions have been quite unpredictable. The sequence of the cultivation seasons has been interrupted by the constant change in weather conditions. For instance, an extended period of drought, prolonged wet season, flash floods, and complete change of season. The unpredictable weather conditions are as a result of global warming and other human activities.
Pests and Diseases
There are a number of pests that affect the growth of crops in the fields. Some of these pests tend to be expensive to curb. For instance, most farmers in the developing world will watch their crops being consumed by pests such as armyworms, stalk borer, Black cutworm, and Asiatic Garden beetles simply because they do not have money to purchase pesticides. There are also some diseases that lead to crop failure. Some of these diseases include leaf blight, pythium, and southern rust. Pest and diseases, if not detected and dealt with early enough, may lead to a massive crop failure.
Poor Farming Practices
Poor farming methods and techniques will also lead to crop failure. The poor farming methods are mostly as a result lack of knowledge of modern farming techniques and lack of funds to embrace the technology in farming. The farming methods that could possibly lead to crop failure include mono-cropping and failure to apply fertilizers and pesticides. Application and practice of the new and the superior farming methods go a long way in curbing and reducing crop failure.
Human Activities
There are several human activities that affect the prosperity of crops in the fields. Application of harsh chemicals could lead to wilting of the crops. Other activities that could lead to crop failures include poor disposal of industrial waste products which may increase levels of the greenhouses gases in the atmosphere. The effects of these gases, such as sulfur dioxide, lead to fall of acid rain and blockage of leaf pores. These phenomena lead to crop wilting and the end result is crop failure.