donderdag 19 november 2015

Hello!

Today I will talk about the environment and agroecosystems of peanuts in the USA!

Peanuts require a warm and not-too-wet, not-too-dry climate. Peanut growers are advised to plant peanut seeds only after the risk of frost has passed, and when the soil temperature at a depth of 5 cm reaches 18ºC or warmer for three days in  row. Peanuts will freeze and die if the temperature is under 13ºC, the optimum temperature to grow peanuts is 30ºC 



As you can see, the picture above shows where the Peanuts are grown and in which regio of North America.


This pictures shows the temperatures in Fahrenheit. As you can see, is that the regios where the peanut plants grow, is where the temperature are the highest. In this way, the peanut plants have their perfect circumstances to grow.

Because the peanuts are grown, in the southern part of America, it can be really hot and dry. When those states experience drought, peanut prices start to climb. Every year the rainfall is different, which means that every year the production amount of peanuts changes as well.

The amount and timing of rainfall or irrigation are keys to success. Peanut producers want to balance the amount of water coming in versus the amount of water that evaporate. Peanuts have a very low water requirement early in the season. But as they progress though the season, particularly at 85 to 105 days, the peak evapo-transpiration rate is about .03 inch per day.

The greatest yield reduction in peanuts can occur from a lack of water during the 50- to 110-day growth period. 
It is important to know, what irrigation system you need and how much water the peanut plant needs. 
Peanut plants have four growing stages; germination and emergence, early vegetation, fruiting and maturation.
- Germination and emergence; covers planting through vegetative emergence. There needs to be moisture in the soil when you plant otherwise, the plant will not establish a strong root system.
- Early vegetation; covers from the time plants emerge until the plants start blooming. Plant can live without much water. 
- Fruiting and maturation; covers from bloom to early pegging, the plants are highly susceptible to drought. The plants really need water to develop. 

Growers should be aware of any water deficits or stress during each peanut growth period. Stress occurring during the first critical 30-day period could result in reduced flowering and pegging and eventually leading to a loss in yields.

Thank you for reading!

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